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Richland, WA, United States of America

Cogema, Inc.

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USPTO Granted Patents = 48

Forward Citations = 374

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40 inventors (with patents filed for the assignee):

Louis Guironnet (7 out of 8 patents)

Michel Bline (6 out of 6 patents)

Bernard Petit (5 out of 7 patents)

4. Bernard Grattier (4 out of 4 patents)

5. Pascal Burfin (4 out of 6 patents)

6. Jean-Claude Leroux (3 out of 4 patents)

7. Michel Verdier (3 out of 10 patents)

8. Dominique Hertz (2 out of 14 patents)

9. Jean-Pierre Denizou (2 out of 6 patents)

10. Bernard Gebelin (2 out of 5 patents)

11. Michel Bordy (2 out of 2 patents)

12. Pierre Amiet (2 out of 5 patents)

13. Philippe Sappey (2 out of 2 patents)

14. Didier Desruelles (2 out of 2 patents)

15. Serge Roillet (1 out of 6 patents)

Core Competencies:

Nuclear Reactor

Fuel Assembly

Waste Reduction

Underwater Machining

Spacer Grid

Leak Detection

Corrosion Resistance

Remote-Controlled Device

Modular Fuel Element

Filtration Plate

Evaporative Crystallization

Centrifugal Decanter

48 patents: Sort by Forward Citations

1. 7045104 - Volume reduction of aqueous waste by evaporative crystallization of burkeite and sodium salts (2006-05-16),

2. 6049581 - Nuclear fuel assembly with an upper cap (2000-04-11),

3. 6002736 - Dismountable fuel assembly of a nuclear reactor cooled by light water (1999-12-14),

4. 5966419 - Spacing grid of a fuel assembly for a nuclear reactor and fuel assembly (1999-10-12),

5. 5844958 - Dismountable fuel assembly of a nuclear reactor cooled by light water (1998-12-01),

6. 5812624 - Core of a pressurized water nuclear reactor and top nozzle of a fuel (1998-09-22),

7. 5754611 - Method and device for measuring at least one characteristic length on a (1998-05-19),

8. 5732116 - Spacer grid of a fuel assembly for a nuclear reactor, including attached (1998-03-24),

9. 5559843 - Device for mounting and extracting a locking sleeve of a guide tube in a (1996-09-24),

10. 5380127 - Non-entry method of underground excavation in weak or water bearing (1995-01-10),

11. 5377238 - Device for the underwater machining of a spacer-grid of a fuel assembly (1994-12-27),

12. 5329561 - Device for checking the thickness and the cohesion of the interface of a (1994-07-12),

13. 5328524 - Process for the surface oxidation of a part composed of passivatable (1994-07-12),

14. 5283812 - Bottom nozzle of a fuel assembly for a water-cooled nuclear reactor (1994-02-01),

15. 5263064 - Device for locking a fuel assembly in a transport container (1993-11-16),

Company Overview

Cogema, Inc., based in Richland, WA, specializes in advanced technologies for the nuclear industry, focusing on the development and manufacturing of nuclear fuel assemblies. The company is recognized for its expertise in fuel assembly design, underwater machining, and innovative spacer grid technology. Additionally, Cogema is engaged in evaporative crystallization and leak detection solutions, enhancing safety and efficiency in nuclear operations. Their commitment to corrosion-resistant materials and remote-controlled devices further underscores their role in advancing nuclear technology.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

48 Patents

#2 in Richland, WA

#165 in Washington

#7,288 in US

#14,561 in the World

Richland, WA, United States of America

Cogema, Inc.

Forward Citations = 374

40 inventors:

Louis Guironnet (7 out of 8 patents)

Michel Bline (6 out of 6 patents)

Bernard Petit (5 out of 7 patents)

4. Bernard Grattier (4 out of 4 patents)

5. Pascal Burfin (4 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Cogema, Inc.. Retrieved from https://idiyas.com/company/cogema

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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