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Sei Corporation

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USPTO Granted Patents = 16

% Expired Patents = 43.8

CIPO Patents = 5

EPO Patents = 19

Trademarks = 8

Forward Citations = 11

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26 inventors (with patents filed for the assignee):

Takehiko Sawai (12 out of 20 patents)

Shinji Saito (12 out of 21 patents)

Kazunori Urao (9 out of 15 patents)

4. Karim Zaghib (4 out of 119 patents)

5. Abdelbast Guerfi (4 out of 76 patents)

6. Pierre Hovington (3 out of 11 patents)

7. Ettore Fustinoni (3 out of 3 patents)

8. Takashi Kawasaki (2 out of 86 patents)

9. Kazuma Hanai (2 out of 5 patents)

10. Martin Dontigny (1 out of 13 patents)

11. Hiroshi Murata (1 out of 67 patents)

12. Masahiko Ueta (1 out of 5 patents)

13. Norihiro Wada (1 out of 12 patents)

14. Nobuyuki Yoshino (1 out of 3 patents)

15. Hironori Konishi (1 out of 6 patents)

16 patents: Sort by Forward Citations

1. 12583200 - Method for forming a creasing on a paper item and paper item provided with a creasing (2026-03-24),

2. 12286746 - Laser finishing method and apparatus for providing a finishing pattern on a workpiece (2025-04-29),

3. 11715828 - Positive-electrode materials: methods for their preparation and use in lithium secondary batteries (2023-08-01),

4. 10879567 - Lithium secondary battery, method for producing power collection foil for same, and power collection foil for same (2020-12-29),

5. 10873073 - Composite particles, manufacturing method thereof, electrode material for secondary battery, and secondary battery (2020-12-22),

6. 10403893 - Positive electrode material for lithium secondary battery (2019-09-03),

7. 10230089 - Electrolyte holder for lithium secondary battery and lithium secondary battery (2019-03-12),

8. 10090525 - Positive-electrode materials: methods for their preparation and use in lithium secondary batteries (2018-10-02),

9. 9660269 - Electrode for lithium secondary battery and lithium secondary battery (2017-05-23),

10. 9577253 - Positive-electrode materials: methods for their preparation and use in lithium secondary batteries (2017-02-21),

11. 9537150 - Electrode for secondary battery and production process for the same and secondary battery (2017-01-03),

12. 9496583 - Lithium secondary battery, method for producing power collection foil for same, and power collection foil for same (2016-11-15),

13. 9484515 - Semiconductor light emitting module comprising an exposed plate surface (2016-11-01),

14. 9413003 - Electrode material for lithium secondary battery and lithium secondary battery (2016-08-09),

15. 9257239 - Binder composition for electrode (2016-02-09),

Company Overview

Sei Corporation, headquartered in Mie, Japan, specializes in the development and manufacturing of advanced electronic components and materials. The company focuses on innovative solutions for various industries, including automotive, telecommunications, and consumer electronics. With a strong emphasis on research and development, Sei Corporation aims to enhance product performance and reliability through cutting-edge technology. Its commitment to quality and sustainability positions it as a key player in the global electronics market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

16 Patents

#7 in Mie

#3,343 in Japan

#37,868 in the World

Sei Corporation

Forward Citations = 11

26 inventors:

Takehiko Sawai (12 out of 20 patents)

Shinji Saito (12 out of 21 patents)

Kazunori Urao (9 out of 15 patents)

4. Karim Zaghib (4 out of 119 patents)

5. Abdelbast Guerfi (4 out of 76 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sei Corporation. Retrieved from https://idiyas.com/company/sei

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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