Ohgen Research Laboratories, Ltd.

Calculating rank

USPTO Granted Patents = 9

CIPO Patents = 4

EPO Patents = 4

Forward Citations = 11

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5 inventors (with patents filed for the assignee):

Kiyoshi Akiyama (8 out of 8 patents)

Masaharu Kanaoka (1 out of 3 patents)

Chigusa Kawanaka (1 out of 1 patent)

4. Takaharu Negoro (1 out of 1 patent)

5. Hideo Agui (1 out of 2 patents)

9 patents: Sort by Forward Citations

1. 7579376 - Geranyl compounds (2009-08-25),

2. 7553820 - Mevalonic acid derivatives (2009-06-30),

3. 7507765 - Geranyl compounds (2009-03-24),

4. 7125852 - Geranyl compounds (2006-10-24),

5. 5672757 - N-methyldeacetylcolchiceinamide derivatives (1997-09-30),

6. 5523320 - N-methyldeacetylcolchiceinamide derivatives (1996-06-04),

7. 5326786 - 5,6,7,9-tetrahydro-1,2,3-trimethoxy-9-oxobenzo[alpha]heptalene (1994-07-05),

8. 5220002 - Deacetylcolchicine derivatives (1993-06-15),

9. 4929547 - Antitumor protein gene of streptococcus pyogenes Su, plasmids containing (1990-05-29),

Company Overview

Ohgen Research Laboratories, Ltd. is a leading provider of research and development services in the field of biotechnology. With a team of experienced scientists and state-of-the-art facilities, we specialize in developing innovative solutions for healthcare, agriculture, and environmental challenges. Our mission is to advance scientific knowledge and create products that improve the quality of life for people around the world.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

9 Patents

#17 in Ishikawa

#4,706 in Japan

Ishikawa, Japan

Ohgen Research Laboratories, Ltd.

Forward Citations = 11

5 inventors:

Kiyoshi Akiyama (8 out of 8 patents)

Masaharu Kanaoka (1 out of 3 patents)

Chigusa Kawanaka (1 out of 1 patent)

4. Takaharu Negoro (1 out of 1 patent)

5. Hideo Agui (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ohgen Research Laboratories, Ltd.. Retrieved from https://idiyas.com/company/ohgen-research-laboratories

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]

4 patents (CIPO):

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]

4 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]