% Expired Patents = 16.7

Forward Citations = 160

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33 inventors (with patents filed for the assignee):

Makoto Usui (2 out of 85 patents)

Kota Nishii (2 out of 13 patents)

Kazumasa Kaiwa (2 out of 3 patents)

4. Masahiro Tomatsu (2 out of 3 patents)

5. Katsura Adachi (2 out of 6 patents)

6. Kazuyuki Tamura (2 out of 2 patents)

7. Takashi Muraya (2 out of 2 patents)

8. Toshihiro Kobayashi (2 out of 3 patents)

9. Junichi Sato (2 out of 7 patents)

10. Takashi Kimura (1 out of 84 patents)

11. Toshihiro Suzuki (1 out of 141 patents)

12. Tetsuya Kobayashi (1 out of 116 patents)

13. Takeshi Gotoh (1 out of 28 patents)

14. Tetsuya Hamada (1 out of 75 patents)

15. Mari Sugawara (1 out of 28 patents)

6 patents: Sort by Forward Citations

1. 7015632 - Light source device, method of producing the same, and display apparatus (2006-03-21),

2. 6474826 - Lighting apparatus (2002-11-05),

3. 5909819 - Box-shaped plastic housing of integrally molded resin (1999-06-08),

4. 5254304 - Injection molding process for producing a box-shaped plastic housing (1993-10-19),

5. 5040098 - Backlight for an electronic display (1991-08-13),

6. 4920441 - Flexible magnetic diskette (1990-04-24),

Company Overview

Fujitsu Kasei Limited is a chemical manufacturer based in Japan. The company specializes in the production of performance chemicals, functional materials, and electronic materials for a variety of industries. With a focus on innovation and sustainability, Fujitsu Kasei Limited is dedicated to providing high-quality products and solutions to its customers worldwide.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#108 in Yokohama

#5,990 in Japan

Yokohama, Japan

Fujitsu Kasei Limited

Forward Citations = 160

33 inventors:

Makoto Usui (2 out of 85 patents)

Kota Nishii (2 out of 13 patents)

Kazumasa Kaiwa (2 out of 3 patents)

4. Masahiro Tomatsu (2 out of 3 patents)

5. Katsura Adachi (2 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fujitsu Kasei Limited. Retrieved from https://idiyas.com/company/fujitsu-kasei

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]