Houston startup taps strategic partner to produce novel 'biobased leather'

cleaner products

Rheom Materials announced a strategic partnership with Bixby International for the commercial-scale production of its novel biobased material, Shorai. Photo via Rheom

A Houston-based next-gen material startup has revealed a new strategic partnership.

Rheom Materials, formerly known as Bucha Bio, has announced a strategic partnership with thermoplastic extrusion and lamination company Bixby International, which is part of Rheom Material’s goal for commercial-scale production of its novel biobased material, Shorai.

Shorai is a biobased leather alternative that meets criteria for many companies wanting to incorporate sustainable materials. Shorai performs like traditional leather, but offers scalable production at a competitive price point. Extruded as a continuous sheet and having more than 92 percent biobased content, Shorai achieves an 80 percent reduction in carbon footprint compared to synthetic leather, according to Rheom.

Rheom, which is backed by Houston-based New Climate Ventures, will be allowing Bixby International to take a minority ownership stake in Rheom Materials as part of the deal.

“Partnering with Bixby International enables us to harness their extensive expertise in the extrusion industry and its entire supply chain, facilitating the successful scale-up of Shorai production,” Carolina Amin Ferril, CTO at Rheom Materials, says in a news release. “Their highly competitive and adaptable capabilities will allow us to offer more solutions and exceed our customers’ expectations.”

In late 2024, Rheom Materials started its first pilot-scale trial at the Bixby International facilities with the goal of producing Shorai for prototype samples.

"The scope of what we were doing — both on what raw materials we were using and what we were creating just kept expanding and growing," founder Zimri Hinshaw previously told InnovationMap.

Listen to Hinshaw on the Houston Innovators Podcast episode recorded in October.

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Zimri T. Hinshaw, founder and CEO of Rheom Materials, joins the Houston Innovators Podcast. Photo courtesy of Rheom

Houston bio-based materials founder rebrands, evolves future-focused sustainability startup

HOUSTON INNOVATORS PODCAST EPISODE 255

At first, Zimri T. Hinshaw just wanted to design a sustainable, vegan jacket inspired by bikers he saw in Tokyo. Now, he's running a bio-based materials company with two product lines and is ready to disrupt the fashion and automotive industries.

Hinshaw founded Rheom Materials (née Bucha Bio) in 2020, but a lot has changed since then. He moved the company from New York to Houston, built out a facility in Houston's East End Maker Hub, and rebranded to reflect the company's newest phase and extended product lines, deriving from dozens of different ingredients, including algae, seaweed, corn, other fruits and vegetables, and more.

"As a company, we pivoted our technology from growing kombucha sheets to grinding up bacteria nanocellulose from kombucha into our products and then we moved away from that entirely," Hinshaw says on the Houston Innovators Podcast. "Today, we're designing different materials that are more sustainable, and the inputs are varied."

Now, in addition to Rheom's leather-like alternative, Shorai, the company has a plastic-like material, Benree, that's 100 percent bio based.

"The scope of what we were doing — both on what raw materials we were using and what we were creating just kept expanding and growing," Hinshaw says.

With that major evolution past just kombucha-based textiles, it was time for a new name, ideated by the company's technical team. "Rheom" is the combination of "rheology" — the study of how polymers flow — and "form."

Rheom has also built a state-of-the-art chemicals testing lab at its new facility after moving into it early last year.

"We've got a ton of capabilities now — and we've been growing those since the beginning," Hinshaw says. "Now we have all this testing equipment — things that pull materials apart, things that test the flexibility of materials."

Next up, Rheom, which is backed by Houston-based New Climate Ventures, among other VCs, will raise a series A funding round to continue supporting its growth.

If you feel like it's hard to find venture capitalists in Houston, you wouldn't be wrong, according to this Houston investor. Photo via Getty Images

Houston investor outlines how rare VCs are in Houston — and how to find them

guest column

As a venture capitalist and former startup founder living in Houston, I get asked a lot about the best way to find and connect with a venture capitalist in Houston. My usual advice is to start with a list, and reach out to everyone on that list. But no one has a comprehensive list. In fact, VCs are such a quiet bunch that I’ve yet to meet someone who personally knows everyone on this proverbial list.

So, I got together with a couple of VC friends of mine, and we put together our own Houston venture capitalist list.

There are, by our count, 11 active venture capital funds headquartered in Houston of any size and type, and outside of corporate venture capital and angel investors, there are 30 total venture capitalists running funds.

Houston has always been quite thin on the VC fund front. I’ve jokingly introduced myself for a while as “one of the 13 venture capitalists in Houston.”

Let’s put this scale in some brutal perspective. With 7.2 million people in the Greater Houston Metro Area, the odds of finding a partner level active venture capitalist in Houston is about 1 in 240,000, if you take a most expanded definition of venture capitalist that might come down to 1 in 100,000. We’re the fifth largest metropolitan area in the country with a tremendous economic engine; there is a ton of capital in Houston, but it’s residing in things like institutional fixed income and equities, real estate, wealth management, corporate, private equity, family office, energy and infrastructure Basically, mostly everywhere but in venture capital funds for tech startups.

By comparison, there are almost as many Fortune 500 CEOs in Houston — 24, by our count — as venture capitalists and fewer venture capitalists than Fortune 1000 CEOs, of which there are 43. That means running into a VC in the checkout line at HEB is about as rare as running into the CEO of CenterPoint, ConocoPhillips, or Academy. In fact, as there are 115 cities in the Greater Houston area, you are three times more likely to be a mayor in Greater Houston Area than a partner at an investor at a VC firm, and more likely to be a college or university president. While we’re at it, you’re 400 times more likely to be a lawyer, 250 times more likely to be a CPA, and over 650 times more likely to be a medical doctor.

Our 30 venture capitalists in the Greater Houston Area are spread across 20 firms and all major venture sectors and stages. Venture capitalist is defined for this list as a full time managing director or partner-level investment professional actively running a venture capital fund with limited partners, currently investing in new venture capital deals from their fund from seed to growth stage, and residing in the Greater Houston Metro area.

To get to 31 we added in a couple of people running venture set asides for PE funds, and a number who work from Houston for funds with no office here. We excluded CVCs, as the decision making is more corporate than individual and rarely includes the committed fund and carried interest structure that defines venture capital, and excluded professionals at angel networks, accelerators, and seed funds that provide investment, but don’t manage conventional venture capital funds, as well as PE funds that do the occasional venture deal. We might be able to triple the number if we include venture capitalists at any professional level, and add in those professionals at PE and angel and seed funds, and corporate venture capital teams who are actively investing. But we’ll get to those other sources of funding in the next list.

The 11 venture capital funds headquartered in Houston are: Mercury, Energy Transition Ventures (my fund), Montrose Lane (formerly called Cottonwood), Texas Medical Center Venture Fund, Artemis, New Climate Ventures, Fitz Gate Ventures, Curate Capital, Knightsgate Ventures, Amplo Ventures,and First Bight Ventures.

Another half a dozen firms have a partner level venture capital investor here, but are headquartered elsewhere: Energy Innovation Capital, Decarbonization Partners, 1984 Ventures, Altitude Ventures, Ascension Ventures, Moneta Ventures, and MKB & Co. Two others, CSL Ventures and SCF Partners, are local private equity funds with a venture capital partner in Houston and a dedicated allocation from a PE fund.

Culling these for partner or managing director level currently in Houston, in alphabetical order by first name, LinkedIn profile and all.

We may have missed a couple of VCs hiding in plain sight, as venture capital is a pretty dynamic business.

VCs are just rare. And yes, perhaps more rare in Houston than in California. Something less than 1 in 100 VCs in the country live in Houston. Across the US there are somewhere around 1,000 to 2,000 active venture capital firms, and maybe another 1,000 to 2,000 active US based CVCs — so, plus or minus maybe at most 4,000 to 5,000 currently active partner level venture capitalists in the country excluding CVC professionals (active VCs and VC funds are really hard to count).

Perhaps in the most stunning statistic, the 7,386 elected state legislators in the US today outnumber the total number of American venture capitalists. Luckily for startup founders, the venture capitalists are more likely to return your phone call.

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Neal Dikeman is a venture capitalist and seven-time startup co-founder investing out of Energy Transition Ventures. He’s currently hosting the Venture Capital for First Time Founders Series at the Ion, where ETV is headquartered.

BUCHA BIO has raised over $1 million to grow its team, build a new headquarters, and accelerate its go-to-market strategy. Image courtesy of BUCHA BIO

Houston-based biomaterials company raises $1.1M to grow team, build new HQ

money moves

A Houston company that has created a plant-based material that can replace unsustainable conventional leathers and plastics has announced the close of its oversubscribed seed funding round.

BUCHA BIO announced it's raised $1.1 million in seed funding. The round included participation from existing partners New Climate Ventures, Lifely VC, and Beni VC, as well as from new partners Prithvi VC, Asymmetry VC, and investors from the Glasswall Syndicate, including Alwyn Capital, as well as Chris Zarou, CEO & Founder of Visionary Music Group and manager of multi-platinum Grammy-nominated rapper, Logic, the startup reports in a news release.

“I’m excited to back BUCHA BIO’s amazing early market traction," Zarou says in the release. "Their next-gen bio-based materials are game-changing, and their goals align with my personal vision for a more sustainable future within the entertainment industry and beyond.”

The company, which relocated its headquarters from New York to Houston in February, was founded by Zimri T. Hinshaw in 2020 and is based out of the East End Makers Hub and Greentown Houston.

BUCHA BIO has created two bio-based materials using bacterial nanocellulose and other plant-based components. The two materials are SHORAI, which can be used as a leather alternative, and HIKARI, a translucent material that is expected to be formally introduced in November.

The fresh funding will help the company to accelerate its move into the marketplace next year by securing co-manufacturers to scale production. Additionally, the company is growing its team and is hiring for a new supply chain lead as well as some technician roles.

Per the release, BUCHA BIO is working on constructing a new headquarters in Houston that will house a materials development laboratory, prototype manufacturing line, and offices.

BUCHA BIO has the potential to impact several industries from fashion and automotive to construction and electronics. According to the Material Innovation Initiative, the alternative materials industry has seen an increased level of interest from investors who have dedicated over $2 billion into the sector since 2015.

“The time for rapid growth for biomaterials is now," says repeat investor Eric Rubenstein, founding managing partner at Houston-based New Climate Ventures, in the release. "BUCHA BIO's team and technical development are advancing hand in hand with the demands of brand partnerships, and we are excited to support them as they capitalize on this global opportunity.”

This week's roundup of Houston innovators includes Eric Rubenstein of New Climate Ventures, Susan Davenport of Greater Houston Partnership, and Zimri T. Hinshaw of Bucha Bio. Courtesy photos

3 Houston innovators to know this week

who's who

Editor's note: In this week's roundup of Houston innovators to know, I'm introducing you to three local innovators across industries — from venture capital to sustainability — recently making headlines in Houston innovation.


Eric Rubenstein, founding managing partner of New Climate Ventures

Eric Rubenstein of New Climate Ventures joins the Houston Innovators Podcast to discuss the future of Houston as a clean energy hub. Photo courtesy of NCV

Houston has a big role to play in the energy transition, says Eric Rubenstein, a climatetech investor, on last week's episode of the Houston Innovators Podcast.

"Houston's role (within the energy transition) is multifaceted," he explains. "We have a talent pool here that fits pretty well in climate tech, alternative materials, and other spaces. ...We have a customer base here that is going to adopt these new technologies."

Rubenstein founded New Climate Ventures to fund startups within the sustainability and climate tech space — which includes technologies that address circular economy, sustainably made materials, clean energy, and more. Click here to read more and stream the episode.

Susan Davenport, chief economic development officer for the Greater Houston Partnership

The Greater Houston Partnership's Susan Davenport shares details on Houston House at SXSW. Photo via houston.org

Last year, the Greater Houston Partnership created virtual content to shine a spotlight on Houston tech and innovation at SXSW. This year, the GHP is taking that same initiative in-person and in Austin. Susan Davenport, chief economic development officer at GHP, shared in a Q&A what people can expect fro Houston House at SXSW.

"Anyone who is interested in technology, commercial aerospace, life sciences, and how DEI traverses with these industries will find value in our rockstar lineup of industry leaders, investors, and startup founders," she says. "We hope to see young professionals, entrepreneurs, investors, and executives."

The activation runs Sunday, March 13, and Monday, March 14. Click here to read more.

Zimri T. Hinshaw, CEO of Bucha Bio

Bucha Bio has arrived to make an impact on the city of Houston. Image via LinkedIn

A sustainable fashion company has relocated to Houston. Bucha Bio, founded in 2019, creates in textiles and composite materials made from bacterial nanocellulose, a much more sustainable materials production, that can be used instead of animal leather, polyurethane, latex, vinyl, epoxy, and more. The company announced in a press release today that it's moving from New York City and opening a next-gen materials headquarters at the East End Maker Hub. Bucha Bio has also been accepted as a member company at Greentown Labs.

According to the release, over 20 locations were considered, and Houston stood out for its hiring potential, local universities, Texas's business-friendly regulation, and more.

“We’ve signed on senior scientists and their experiences from the oil and plastic industry are perfectly suited to biomaterials,” says Zimri T. Hinshaw, CEO of Bucha Bio, in the release. Click here to read more.

Eric Rubenstein of New Climate Ventures joins the Houston Innovators Podcast to discuss the future of Houston as a clean energy hub. Photo courtesy of NCV

Climate tech investor says Houston has a multifaceted role to play in the energy transition

houston innovators podcast episode 122

If the city of Houston wants to maintain its moniker of Energy Capital of the World, it has make strides within the energy transition — and that needs to be accomplished in a myriad of ways.

"Houston's role (within the energy transition) is multifaceted," says Eric Rubenstein, founding managing partner of New Climate Ventures, on this week's episode of the Houston Innovators Podcast.

Rubenstein founded New Climate Ventures to fund startups within the sustainability and climate tech space — which includes technologies that address circular economy, sustainably made materials, clean energy, and more.

"We have a talent pool here that fits pretty well in climate tech, alternative materials, and other spaces," he continues. "We have a customer base here that is going to adopt these new technologies."

The fact that Houston's major energy companies — of which there are many in town — will be the customers of emerging clean energy technologies positions the city as a hub for attracting innovative startups. Just last week, Bucha Bio, one of NCV's portfolio companies expanded into Houston. The New-York founded startup creates in textiles and composite materials made from bacterial nanocellulose, a much more sustainable materials production, that can be used instead of animal leather, polyurethane, latex, vinyl, epoxy, and more.

Rubenstein says Bucha Bio narrowed down its options to San Diego and Houston, before ultimately deciding on the Bayou City for its talent pool. The company, which is a member of Greentown Houston, is now based out of the East End Maker Hub.

"As these technologies are being spun out of labs, Houston has become a destination for these companies," Rubenstein says. "Bucha Bio isn't an irregular occurrence these days."

The missing piece of the puzzle is still venture dollars — and Rubenstein is on a mission to move that needle. This year, NCV is focused on closing its fund and deploying capital into early-staged climate tech companies.

"Our goal is really to watch for transformational change in the industries we're investing in," he says. "We're really excited about the technologies in the space and will continue looking for what's to come."

Rubenstein shares more about New Climate Ventures and the trend that is impact investing on the podcast. Listen to the full interview below — or wherever you stream your podcasts — and subscribe for weekly episodes.


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UH med school granted $2M gift to offer student scholarships

scholarship gift

A new scholarship endowment aims to support students in the University of Houston’s recently established medical school.

The University of Houston’s Tilman J. Fertitta Family College of Medicine received a planned estate gift commitment estimated at $2.1 million to establish the Bob Diehl and Teresa Evans Diehl Scholarship Endowment. The scholarship will assist full-time medical students who demonstrate financial need and meet academic standards.

“Endowed scholarships like this do more than ease the burden of tuition—they empower our students to focus on learning, leadership and compassionate care,” Jonathan McCullers, UH vice president of health affairs and dean of the Fertitta College of Medicine, said in a news release. “We are deeply grateful to the Diehls for their vision and commitment to expanding access to health care through education.”

The endowment aims to provide annual scholarship support for students enrolled in the Fertitta College of Medicine. The gift also aligns with the university's fundraising initiative focused on expanding opportunities for students, known as Can’t Stop Houston: The Centennial Campaign, which works to expand research ahead of UH’s 100th anniversary next year.

The Diehls are both graduates from UH, and Bob Diehl spent 38 years working at UPS.

“It brings me happiness to know that my endowment will make a difference in young people's lives and in the communities that will need those future doctors,” he said in the release.

The Fertitta College of Medicine welcomed its inaugural class of 30 students in 2020 and expects classes to grow to 120 students in the coming years, according to UH. The university believes scholarship opportunities will be crucial for students to pursue medical education despite financial challenges.

“The Diehl family’s generosity will open doors for talented future physicians who are called to serve our communities but may otherwise face financial barriers to pursuing a medical education,” McCullers added.

9 Houston universities boast best grad programs of 2026, per U.S. News

making the grade

Nine Houston-area universities are earning new national acclaim in a report of the best graduate schools in the U.S. for 2026.

U.S. News & World Report annually publishes its national "Best Graduate Schools" rankings in early April, which comprehensively rank graduate programs across business, education, engineering, law, health, and many others.

New for the 2026 edition, the publication updated its rankings across 12 health disciplines — only physician assistant and social work were excluded — and "the first full refresh" of doctoral science programs since 2022. U.S. News also revived its Master's in Fine Arts rankings for the first time since 2020.

"We know a graduate degree is a major commitment,” said LaMont Jones, Ed.D., managing editor of Education at U.S. News. “That is why we are dedicated to methodologies that thoroughly examine a wide range of factors, from research excellence to career success. These rankings are a powerful tool for prospective students, offering clarity and confidence as they approach their most critical educational choice."

This is how the nine local schools ranked, statewide and nationally, and how they compared with last year's national ranking:

Rice University

  • Brown School of Engineering – No. 3 best graduate engineering school in Texas; No. 25 nationally (up from No. 26 last year)
  • Jones Graduate School of Business – No. 3 best business school in Texas; No. 29 nationally (unchanged)

Several of Rice’s doctoral science programs were among the 30 best in the country, including earth sciences (No. 20), chemistry (No. 22), biostatistics (No. 25), mathematics (No. 26), statistics (No. 27), and physics (No. 28). The Ph.D. biological sciences program tied as 55th best nationwide. Rice’s public affairs program tied for No. 107 nationally.

University of Houston

  • Cullen College of Engineering – No. 5 best graduate engineering school in Texas; tied for No. 71 nationally (up from No. 72 last year)
  • College of Education – No. 5 best graduate education school in Texas; No. 95 nationally (down from No. 81 last year)
  • UH Law Center – No. 5 best law school in Texas; No. 54 nationally (up from No. 63 last year)

The University of Houston has the 31st best pharmacy program in the country, its speech-language pathology program tied for No. 54 nationally, and the clinical psychology program tied as 65th best in the U.S. In the doctoral sciences rankings, UH’s earth sciences program ranked No. 80 nationally, the physics program tied for No. 81, the chemistry program ranked 84th, and the mathematics program ranked No. 87. The Ph.D. biological sciences program ranked as the 104th best in the nation. UH’s public affairs program tied as 80th best nationally. The university also has the 106th best fine arts program in the nation.

University of Houston, Clear Lake

  • College of Education – No. 12 best graduate education school in Texas; No. 164 nationally (up from No. 166 last year)

University of Texas Health Science Center (UT Health Houston)

  • Cizik School of Nursing – No. 2 best master’s in nursing program in Texas; No. 32 nationally (up from No. 41 last year)
  • McGovern Medical School – Tier 2 best research medical school in the U.S.

UT Health Houston’s public health program tied for No. 31 nationwide, and the health care management program tied for No. 47. The Cizik School of Nursing’s nurse anesthesia program tied as 49th best in the country. In the doctoral sciences rankings, the university’s biostatistics program tied as the 25th best nationwide.

University of Texas Medical Branch, Galveston

  • Sealy School of Medicine – Tier 2 best medical research school in the U.S.

UT Medical Branch’s occupational therapy program tied for No. 41 nationally, the physical therapy program tied for No. 57, and the university tied for the 60th best nurse anesthesia program in the U.S. The public health program tied for No. 89 nationally. In the doctoral sciences rankings, the university’s biostatistics program tied for No. 70 nationally.

Prairie View A&M University

  • College of Nursing – No. 5 best master’s in nursing program in Texas; No. 104 nationally (unchanged)

South Texas College of Law Houston

  • No. 7 best law school in Texas; No. 128 nationally (up from No. 138 last year)

Texas Southern University

  • College of Education – No. 17 best graduate education school in Texas; No. 219 nationally (down from No. 178-195 last year)

TSU’s pharmacy program tied for No. 120 nationally.

University of Texas MD Anderson
UT MD Anderson’s doctoral biostatistics program tied as the 17th best nationally, and the doctoral biological sciences program tied for No. 50.

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This article originally appeared on CultureMap.com.

Houston medtech firm secures $30M for neurosurgical robot

stroke surgery

Robotic neurosurgery is an exciting new frontier in medicine, and Houston-based medtech firm XCath is leading the charge with its revolutionary Iris robotic system. The company announced in March that it had secured $30 million in Series C funding to continue developing systems to tackle blood clots in the human brain.

“We are grateful to our investors for their conviction in our shared mission to improve clinical outcomes for patients impacted by endovascular diseases,” Eduardo Fonseca, CEO of XCath, said in a news release. “In 2025, the XCath team advanced the frontiers of endovascular robotics. This funding accelerates our commitment to expanding access to life-saving care so that where a patient lives no longer determines whether they live.”

XCath–which also has campuses in Pangyo, South Korea–has already achieved a number of remarkable firsts in robotic neurosurgery. The Iris is the only endovascular robotic system currently in development to perform intracranial navigation or neurointerventional treatment, and is the only robot in the world to have performed an intracranial neurovascular procedure involving the robotic manipulation of three devices.

These new Series C funds, which bring the company's total investment to $92 million, will go toward developing a clinical telerobot capable of performing a mechanical thrombectomy. This would bring unprecedented accuracy and precision to the surgical removal of brain clots, significantly reducing the risk of neurosurgery.

“Robotic surgery succeeds when innovation is paired with practical execution,” Dr. Fred Moll, chairman of the XCath board of directors, said in the release. “XCath has built a promising technology foundation, and just as importantly, a team that values rigor and appreciates perspective. I’m excited to support them as they take on the mission of globalizing access to gold-standard care for stroke patients.”

In November 2025, the Iris debuted under the control of Dr. Vitor Mendes Pereira at The Panama Clinic in Panama City, alongside local Principal Investigator Dr. Anastasio Ameijeiras Sibauste. It was only the second time in human history that a robot had been used for intracranial neurovascular intervention, and it established Iris as a viable technology in the fight against stroke.

“Treatment of stroke and other neurovascular diseases represents one of the most significant financial opportunities in healthcare, supported by positive reimbursement dynamics and strong demand from health systems,” Nicholas Drysdale, CFO of XCath, added in the release. “With our continued investor support and disciplined capital deployment, XCath is positioned to build a category-leading platform in endovascular robotics”.

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