Toa Pharmaceutical Co., Ltd.

Calculating rank

USPTO Granted Patents = 4

EPO Patents = 1

Trademarks = 2

Forward Citations = 62

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12 inventors (with patents filed for the assignee):

Takashi Masuda (3 out of 69 patents)

Toshio Kasama (1 out of 1 patent)

Mitsuru Noto (1 out of 1 patent)

4. Susumu Oguro (1 out of 1 patent)

5. Isao Hanazome (1 out of 1 patent)

6. Rena Tatekawa (1 out of 1 patent)

7. Taketoshi Arai (1 out of 1 patent)

8. Masanori Sasatsu (1 out of 1 patent)

9. Kazuo Masuda (1 out of 1 patent)

10. Hajime Hamashima (1 out of 1 patent)

11. Genichiro Seo (1 out of 1 patent)

12. Kenji Shiojima (1 out of 2 patents)

13. Tadao Tanaka (1 patent)

14. Daisuke Koshiishi (0 patent)

4 patents: Sort by Forward Citations

1. 6852311 - Ophthalmic ointments for treating infective eye disease (2005-02-08),

2. 6063935 - Azetidine derivative, bifidobacterium division-promoting composition (2000-05-16),

3. 5143845 - Mixture of saccarifying lactic acid producing and butyric acid producing (1992-09-01),

4. 4808417 - Feed additive for fish cultivation (1989-02-28),

Company Overview

Toa Pharmaceutical Co., Ltd. is a Japanese pharmaceutical company that specializes in the development, manufacturing, and sales of prescription and over-the-counter drugs. Founded in 1946, Toa Pharma is committed to providing high-quality medications to improve the health and well-being of people around the world.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

4 Patents

#41 in Toyama 939-0643

#7,590 in Japan

Toyama, Japan

Toa Pharmaceutical Co., Ltd.

Forward Citations = 62

12 inventors:

Takashi Masuda (3 out of 69 patents)

Toshio Kasama (1 out of 1 patent)

Mitsuru Noto (1 out of 1 patent)

4. Susumu Oguro (1 out of 1 patent)

5. Isao Hanazome (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Toa Pharmaceutical Co., Ltd.. Retrieved from https://idiyas.com/company/toa-pharmaceutical-company

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]