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For the Inventor, By the Inventor

Funabashi, Japan

Kazuhiko Ohrai

This inventor holds 14 USPTO granted patents. Top assignees: Nissan Chemical Industries Limited, Chugai Seiyaku Kabushiki Kaisha. Active years: 1990-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhiko Ohrai. Retrieved from https://idiyas.com/inventor/kazuhiko-ohrai

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 14

% Patents Active = 50.0

Average Co-Inventor Count = 5.7

ph-index = 2

Forward Citations = 30(Granted Patents)


Location History:

  • Chiba-ken, JP (1999)
  • Funabashi, JP (1990 - 2011)

Company Filing History:

goldMedal14 out of 1,235 
 
Nissan Chemical Industries Limited
 patents
silverMedal1 out of 987 
 
Chugai Seiyaku Kabushiki Kaisha
 patents
where one patent can have more than one assignee

Years Active: 1990-2011

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14 patents (USPTO):Explore Patents
1. 7964623 - Tricyclic benzopyrane compound (2011-06-21),
2. 7879887 - α-amino acid derivatives and medicaments containing the same as an active ingredient (2011-02-01),
3. 7652008 - Tricyclic benzopyran compound as anti-arrhythmic agents (2010-01-26),
4. 7041700 - Substituted benzopyran derivatives against arrhythmia (2006-05-09),
5. 6809114 - 4-aminobenzopyran derivatives (2004-10-26),
6. 6677371 - 4-oxybenzopyran derivative (2004-01-13),
7. 6589983 - Benzopyran derivative (2003-07-08),
8. 6555574 - 4-oxybenzopyran derivative (2003-04-29),
9. 6486178 - Indane derivatives (2002-11-26),
10. 6066631 - Chroman derivatives (2000-05-23),
11. 5919806 - Medicines for cardiac insufficiency (1999-07-06),
12. 5880301 - Optically active bidentate phosphine ligand palladium complex (1999-03-09),
13. 5272271 - Pyranobenzoxadiazole derivatives (1993-12-21),
14. 4900752 - Pyranobenzoxadiazole derivatives (1990-02-13),

Title: Kazuhiko Ohrai: Innovator in Pharmaceutical Chemistry

Introduction

Kazuhiko Ohrai is a distinguished inventor based in Funabashi, Japan. He has made significant contributions to the field of pharmaceutical chemistry, holding a total of 14 patents. His work primarily focuses on the development of novel compounds with therapeutic applications.

Latest Patents

Among his latest patents is a tricyclic benzopyrane compound, which relates to benzopyran derivatives that are useful as anti-arrhythmic agents. This invention includes various structural components that enhance the efficacy of the compounds. Another notable patent involves α-amino acid derivatives that exhibit β-ARK1 inhibitory activity, making them valuable for preventing or treating heart failure. These derivatives also demonstrate antitumor activity, particularly in targeting cell proliferative diseases such as cancer.

Career Highlights

Kazuhiko Ohrai has worked with prominent companies in the chemical and pharmaceutical industries, including Nissan Chemical Industries Limited and Chugai Seiyaku Kabushiki Kaisha. His experience in these organizations has allowed him to develop innovative solutions that address critical health issues.

Collaborations

Throughout his career, Ohrai has collaborated with notable colleagues, including Toru Yamashita and Kazufumi Yanagihara. These partnerships have contributed to the advancement of his research and the successful development of his patented inventions.

Conclusion

Kazuhiko Ohrai's contributions to pharmaceutical chemistry through his innovative patents highlight his role as a key inventor in the field. His work continues to impact the development of therapeutic agents that address significant health challenges.

Profile summary based on public USPTO records.
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]
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