Kyowa Pharma Chemical Co., Ltd.

Calculating rank

USPTO Granted Patents = 4

EPO Patents = 1

Forward Citations = 0

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9 inventors (with patents filed for the assignee):

Shoichiro Tomonaga (4 out of 4 patents)

Takahiro Isobe (3 out of 4 patents)

Etsuo Ohshima (3 out of 3 patents)

4. Ikumi Shimokawa (1 out of 1 patent)

5. Asano Tatsuhiro (0 patent)

6. Takenaka Junpei (0 patent)

7. Maenishi Ryota (0 patent)

8. Atago Takayuki (0 patent)

9. Narumi Chihiro (0 patent)

4 patents: Sort by Forward Citations

1. 12758524 - Prophylactic or therapeutic drug for Parkinson's disease (2026-10-13),

2. 12723021 - Method for producing trisulfide compound or selenotrisulfide compound (2026-09-01),

3. 12552764 - Trisulfide compound and clathrate thereof (2026-02-17),

4. 12534432 - Trisulfide compound (2026-01-27),

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USPTO Data Jan 1 1976 - Oct 27 2026

4 Patents

#1 in Takaoka

#7,590 in Japan

Takaoka, Japan

Kyowa Pharma Chemical Co., Ltd.

Forward Citations = 0

9 inventors:

Shoichiro Tomonaga (4 out of 4 patents)

Takahiro Isobe (3 out of 4 patents)

Etsuo Ohshima (3 out of 3 patents)

4. Ikumi Shimokawa (1 out of 1 patent)

5. Asano Tatsuhiro (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kyowa Pharma Chemical Co., Ltd.. Retrieved from https://idiyas.com/company/kyowa-pharma-chemical

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]

1 patent (EPO):

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]