Ohara Pharmaceutical Co., Ltd.

Calculating rank

USPTO Granted Patents = 5

% Expired Patents = 40.0

EPO Patents = 2

Forward Citations = 2

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11 inventors (with patents filed for the assignee):

Magoichi Sako (4 out of 4 patents)

Shinpei Sugiyama (2 out of 2 patents)

Toshikazu Ushijima (1 out of 4 patents)

4. Sako Magoichi (1 out of 1 patent)

5. Naoko Hattori (1 out of 1 patent)

6. Xiong Luo (1 out of 1 patent)

7. Shinya Kimura (1 out of 1 patent)

8. Kazuharu Kamachi (1 out of 1 patent)

9. Hiroshi Ureshino (1 out of 1 patent)

10. Yuki Kurahashi (1 out of 1 patent)

11. Tatsuro Watanabe (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 12472196 - Use of DNMT inhibitor (2025-11-18),

2. 11173174 - DNMT inhibitor as solid tumor therapeutic drug (2021-11-16),

3. 10227374 - Silyl etherified derivatives of 5-azacytidines in carbohydrate moiety (2019-03-12),

4. 9901641 - Silyl etherified derivatives of 5-azacytidines in carbohydrate moiety (2018-02-27),

5. 9670238 - 5'-dibenzyl phosphates of 5-azacytidine or 2′-deoxy-5-azacytidine (2017-06-06),

Company Overview

Ohara Pharmaceutical Co., Ltd. is a renowned Japanese pharmaceutical company specializing in the development, manufacturing, and marketing of innovative prescription drugs and consumer healthcare products. With a strong emphasis on research and development, Ohara Pharmaceutical aims to provide high-quality products 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 - Nov 3 2026

5 Patents

#2 in Koka

#6,661 in Japan

Koka, Japan

Ohara Pharmaceutical Co., Ltd.

Forward Citations = 2

11 inventors:

Magoichi Sako (4 out of 4 patents)

Shinpei Sugiyama (2 out of 2 patents)

Toshikazu Ushijima (1 out of 4 patents)

4. Sako Magoichi (1 out of 1 patent)

5. Naoko Hattori (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ohara Pharmaceutical Co., Ltd.. Retrieved from https://idiyas.com/company/ohara-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]

2 patents (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]