% Expired Patents = 33.3

Forward Citations = 9

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13 inventors (with patents filed for the assignee):

Takao Abe (1 out of 84 patents)

Kazuhiko Hayashi (1 out of 16 patents)

Susumu Nakajima (1 out of 6 patents)

4. Isao Sakata (1 out of 6 patents)

5. Soh-ichi Kaneda (1 out of 1 patent)

6. Souiti Kaneda (1 out of 1 patent)

7. Toshio Kumagai (1 out of 9 patents)

8. Hisashi Shimidzu (1 out of 2 patents)

9. Yoshiyuki Shikata (1 out of 1 patent)

10. Muneo Hikida (1 out of 1 patent)

11. Masahiko Mori (1 out of 1 patent)

12. Hiroyuki Takata (1 out of 3 patents)

13. Hiroshi Matsunaga (1 out of 5 patents)

3 patents: Sort by Forward Citations

1. 6479478 - Carbapenem compounds (2002-11-12),

2. 6080755 - 1,9-diazabicyclo[4.3.0]nona-3,8-diene derivatives (2000-06-27),

3. 6063777 - Iminochlorinaspartic acid derivatives (2000-05-16),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#3,547 in Tokyo

#8,929 in Japan

Tokyo, Japan

Wyeth Lederle Japan, Ltd.

Forward Citations = 9

13 inventors:

Takao Abe (1 out of 84 patents)

Kazuhiko Hayashi (1 out of 16 patents)

Susumu Nakajima (1 out of 6 patents)

4. Isao Sakata (1 out of 6 patents)

5. Soh-ichi Kaneda (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Wyeth Lederle Japan, Ltd.. Retrieved from https://idiyas.com/company/wyeth-lederle-japan

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]