Company lists · Data refreshed September 2026

Top 17 Fuel cell catalysts manufacturers based in the United States

RevenueBase identified 34 fuel cell catalysts manufacturers headquartered in the United States as of September 2026 and tracks 1,595 professional contacts across them, including 530 with verified work emails. Louisville is the largest hub.

This list covers fuel cell catalysts manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
34Companies
1,595Contacts tracked
530Verified emails
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The 17 largest fuel cell catalysts manufacturers based in the United States

Ranked by team size
Top 17 of 34 fuel cell catalysts manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to fuel cell catalysts manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceHouston, TX, United StatesHQ checked Sep 16, 20261,001-5,000440 contacts →

Partial evidence

“Ketjen is a provider of advanced catalyst solutions to leading producers in the petrochemical and refining industries.”

Source: RevenueBase Database · checked Sep 16, 2026
2Strong evidenceLincolnton, NC, United StatesHQ checked Sep 16, 2026201-500199 contacts →

Strong evidence

“Cataler North America, a Toyota Motor Corporation affiliate, is a leading manufacturer of automotive catalysts that enhance the quality of the environment by filtering exhaust…”

Source: RevenueBase Database · checked Sep 16, 2026
3Partial evidenceAlvin, TX, United StatesHQ checked Sep 16, 2026201-50084 contacts →

Partial evidence

“UNICAT Catalyst Technologies, LLC is an innovative catalyst and process technology partner that collaborates with businesses to find effective solutions to increase efficiency and…”

Source: RevenueBase Database · checked Sep 16, 2026
4Partial evidenceOxnard, CA, United StatesHQ checked Sep 16, 202611-5070 contacts →

Partial evidence

“CDTi Advanced Materials is a catalyst engineering and coating technology company serving emissions control, power generation, industrial, methane abatement, and carbon capture…”

Source: RevenueBase Database · checked Sep 16, 2026
5Strong evidenceAlbuquerque, NM, United StatesHQ checked Sep 16, 202611-5049 contacts →

Strong evidence

“Pajarito Powder, LLC is a venture-backed developer and manufacturer of advanced electrocatalyst materials for fuel cells and electrolyzers.”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceMontgomeryville, PA, United StatesHQ checked Sep 16, 202651-20048 contacts →

Indirect evidence

“ESW Group® was founded in 1998 as an R&D company with the goal to develop ceramic based catalytic converters for the automotive industry.”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidenceLewis Center, OH, United StatesHQ checked Sep 16, 202651-20046 contacts →

Indirect evidence

“Nexceris is a materials science and engineering company that partners with innovators to accelerate the path from concept to commercialization.”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceCoppell, TX, United StatesHQ checked Sep 16, 202651-20026 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
9Strong evidenceNew York, NY, United StatesHQ checked Sep 16, 202611-5016 contacts →

Strong evidence

“Arco Technologies Inc develops and produces proton exchange membrane (PEM) fuel cell and anion exchange membrane (AEM) electrolyzers.”

Source: RevenueBase Database · checked Sep 16, 2026
10Strong evidenceLemont, IL, United StatesHQ checked Sep 16, 20261-1014 contacts →

Strong evidence

“Building hydrogen for industrial decarbonization with durable and efficient fuel cells and electrolyzers”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceMaryville, TN, United StatesHQ checked Sep 16, 202611-5013 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceLouisville, KY, United StatesHQ checked Sep 16, 20261-108 contacts →

Indirect evidence

“Advanced Energy Materials, LLC (ADEM) was founded in 2009 with a vision to commercialize nanowire materials for lithium-ion batteries and energy storage applications.”

Source: RevenueBase Database · checked Sep 16, 2026
13Strong evidenceCollege Station, United StatesHQ checked Sep 16, 202611-507 contacts →

Strong evidence

“FuelCellsEtc specializes in providing highly customized Fuel Cell and Electrolyzer components.”

Source: RevenueBase Database · checked Sep 16, 2026
14Indirect evidenceMarietta, GA, United StatesHQ checked Sep 16, 20261-105 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
15Partial evidenceFremont, CA, United StatesHQ checked Sep 16, 202611-504 contacts →

Partial evidence

“We are revolutionizing power generation using readily available renewable fuels.”

Source: RevenueBase Database · checked Sep 16, 2026
16Strong evidenceDallas, TX, United StatesHQ checked Sep 16, 202611-504 contacts →

Strong evidence

“Catalytic Converter Manufacturer, Catalyst and Catalyst Coatings, Metallic and Ceramic Substrates.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidencePalo Alto, CA, United StatesHQ checked Sep 16, 202651-2002 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026

Showing 17 of 34 fuel cell catalysts manufacturers based in the United States

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Fuel cell catalysts manufacturers based in the United States at a glance

As of Sep 16, 2026
33.2%Verified-email coverage
46.9Average contacts per company
11-50Median size (employees)
5.9%Largest-city concentration · Louisville
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
12
11-50
10
51-200
7
201-500
4
1,001-5,000
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 34 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among fuel cell catalysts manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “fuel cell catalysts manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names fuel cell catalysts manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among fuel cell catalysts manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 530 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names fuel cell catalysts manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many fuel cell catalysts manufacturers are there based in the United States?

RevenueBase identified 34 fuel cell catalysts manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Ketjen Corporation, headquartered in Houston, tops this list with the largest team on record.

Which city has the most fuel cell catalysts manufacturers?

Louisville leads with 2 headquartered companies, followed by South Windsor (2) and Albuquerque (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 530 verified decision-maker contacts tracked across these 34 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.