% Expired Patents = 100.0

Forward Citations = 0

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14 inventors (with patents filed for the assignee):

Fumikazu Yokoyama (1 out of 9 patents)

Naoko Watanabe (1 out of 2 patents)

Goh Tsujiuchi (1 out of 3 patents)

4. Kozo Fujisaki (1 out of 6 patents)

5. Hideyuki Nagasawa (1 out of 6 patents)

6. Takashi Yaguchi (1 out of 14 patents)

7. Ikuo Igarashi (1 out of 6 patents)

8. Chihiro Sugimoto (1 out of 4 patents)

9. Gakunan Gen (1 out of 4 patents)

10. Naotoshi Tsuji (1 out of 5 patents)

11. Nobuaki Kushida (1 out of 2 patents)

12. Takako Okuda (1 out of 1 patent)

13. Myonjo Yu (1 out of 1 patent)

14. Hiroshi Suzuki (1 out of 4 patents)

2 patents: Sort by Forward Citations

1. 7501431 - Physiologically active substances PF1270A, B and C substances (2009-03-10),

2. 7488488 - Tick chitinase (2009-02-10),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#4,372 in Tokyo

#11,139 in Japan

Tokyo, Japan

Meui Seika Kaisha, Ltd.

Forward Citations = 0

14 inventors:

Fumikazu Yokoyama (1 out of 9 patents)

Naoko Watanabe (1 out of 2 patents)

Goh Tsujiuchi (1 out of 3 patents)

4. Kozo Fujisaki (1 out of 6 patents)

5. Hideyuki Nagasawa (1 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Meui Seika Kaisha, Ltd.. Retrieved from https://idiyas.com/company/meui-seika-kaisha

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]