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For the Inventor, By the Inventor

Danbury, CT, United States of America

Fuelcell Energy, Inc.


USPTO Granted Patents = 197

% Expired Patents = 5.6



Trademarks = 10

Forward Citations = 913

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140 inventors (with patents filed for the assignee):

goldMedal Fred C Jahnke (48 out of 51 patents)

silverMedal Mohammad Farooque (42 out of 57 patents)

bronzeMedal Chao-yi Yuh (40 out of 44 patents)

4.  Matthew Lambrech (28 out of 28 patents)

5.  Hossein Ghezel-Ayagh (20 out of 21 patents)

6.  Ramakrishnan Venkataraman (20 out of 20 patents)

7.  Abdelkader Hilmi (19 out of 22 patents)

8.  Joseph M Daly (18 out of 18 patents)

9.  Pinakin S Patel (16 out of 23 patents)

10.  Lawrence J Novacco (11 out of 14 patents)

11.  Sai P Katikaneni (10 out of 39 patents)

12.  Stephen Jolly (10 out of 10 patents)

13.  Dana Kelley (10 out of 11 patents)

14.  Keith E Davis (10 out of 12 patents)

15.  Timothy C Geary (9 out of 10 patents)


Core Competencies:
Hydrogen Production
Molten Carbonate Fuel Cells
Carbon Dioxide Capture
Electrochemical Systems
Fuel Cell Assembly
High Efficiency
Reformer-Electrolyzer-Purifier
Humidity Management
Anode Exhaust
Energy Storage
Catalysts
Electrolyte Matrix

197 patents:

1. 12637624 - Fluidized catalytic cracking unit system with integrated reformer-electrolyzer-purifier (2026-05-26),
2. 12525630 - Reformer-electrolyzer-purifier (REP) assembly for hydrogen production, systems incorporating same and method of producing hydrogen (2026-01-13),
3. 12512489 - External mixer-eductor-oxidizer and module connections thereof (2025-12-30),
4. 12476267 - Carbon dioxide production from carbonate fuel cells (2025-11-18),
5. 12476264 - System for rebalancing a pressure differential in a fuel cell using gas injection (2025-11-18),
6. 12412913 - System including fuel cell assembly voltage monitor (2025-09-09),
7. 12374703 - Flow field baffle for molten carbonate fuel cell cathode (2025-07-29),
8. 12355085 - Cathode collector structures for molten carbonate fuel cell (2025-07-08),
9. 12347910 - Fuel cell power plant with a racked fuel cell module (2025-07-01),
10. 12334607 - Fuel cell assembly with external manifold for parallel flow (2025-06-17),
11. 12322844 - Water gas shift reactor cooling assembly for a fuel cell system (2025-06-03),
12. 12322842 - System and method for producing hydrogen using high temperature fuel cells (2025-06-03),
13. 12255367 - Supported nickel catalysts used as direct internal reforming catalyst in molten carbonate fuel cells (2025-03-18),
14. 12237549 - Hydrogen generation using a fuel cell system with an REP (2025-02-25),
15. 12095129 - Reforming catalyst pattern for fuel cell operated with enhanced COutilization (2024-09-17),
Fuelcell Energy, Inc. is a leading innovator in fuel cell technology, headquartered in Danbury, Connecticut. The company specializes in the development and manufacturing of advanced electrochemical systems that harness hydrogen production and carbon dioxide capture. Its core technologies include molten carbonate fuel cells and high-efficiency reformer-electrolyzer-purifier systems, aimed at enhancing energy efficiency and sustainability. Fuelcell Energy is committed to addressing global energy challenges through innovative solutions in clean energy generation.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Fuelcell Energy, Inc.
197 Patents

#5 in Danbury, CT

#57 in Connecticut

#2,089 in US

#4,278 in the World

Danbury, CT (US)
Danbury, CT, United States of America

Fuelcell Energy, Inc.

Forward Citations = 913

140 inventors:

goldMedal Fred C Jahnke (48 out of 51 patents)

silverMedal Mohammad Farooque (42 out of 57 patents)

bronzeMedal Chao-yi Yuh (40 out of 44 patents)

4.  Matthew Lambrech (28 out of 28 patents)

5.  Hossein Ghezel-Ayagh (20 out of 21 patents)

Please report any incorrect information to [email protected]
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