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For the Inventor, By the Inventor

Shizuoka, Japan

Toshiaki Kumazawa

This inventor holds 11 USPTO granted patents. Top assignees: Kyowa Hakko Kogyo Co., Ltd., Kyowa Hakko Kogyo. Active years: 1985-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiaki Kumazawa. Retrieved from https://idiyas.com/inventor/toshiaki-kumazawa

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

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 6.6

ph-index = 9

Forward Citations = 139(Granted Patents)


Location History:

  • Shizuoka, JP (1985 - 1995)
  • Shizuoka-ken, JP (1997)
  • Sunto-gun, JP (2000)
  • Hachiohji, JP (2001)

Company Filing History:

goldMedal10 out of 730 
 
Kyowa Hakko Kogyo Co., Ltd.
 patents
silverMedal1 out of 9 
 
Kyowa Hakko Kogyo
 patents

Years Active: 1985-2001

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11 patents (USPTO):Explore Patents
1. 6211227 - Tricyclic compounds (2001-04-03),
2. 6150355 - Phenylpiperidine derivative (2000-11-21),
3. 5679703 - Tricyclic compounds having ACAT inhibiting activity (1997-10-21),
4. 5607955 - Tricyclic compounds on angiotensin II receptor antagonists (1997-03-04),
5. 5478840 - Tricyclic compounds (1995-12-26),
6. 5478835 - Tricyclic compounds and intermediates thereof (1995-12-26),
7. 5378701 - Tricyclic compounds (1995-01-03),
8. 5340807 - Tricyclic compounds and intermediates thereof (1994-08-23),
9. 5239083 - Indole derivatives which inhibit steroid 5.alpha. reductase (1993-08-24),
10. 5116863 - Dibenz[b,e]oxepin derivative and pharmaceutical compositions thereof (1992-05-26),
11. 4547496 - Antiulcer [1] benzepino[3,4-b]pyridine and compositions (1985-10-15),

Title: The Innovations of Toshiaki Kumazawa: A Spotlight on His Contributions

Introduction

Toshiaki Kumazawa, an accomplished inventor based in Shizuoka, Japan, has significantly contributed to the field of pharmaceutical innovation. With a remarkable portfolio of 11 patents, Kumazawa's work primarily focuses on treatments that address pressing health concerns, particularly those related to urinary conditions.

Latest Patents

Among Kumazawa's notable inventions are his latest patents involving tricyclic compounds. These compounds provide a potential treatment option for pollakiuria and urinary incontinence, representing a significant advancement in the pharmacological approach to these conditions. His work on phenylpiperidine derivatives also showcases his diverse range of innovative solutions in this domain.

Career Highlights

Kumazawa has spent a significant portion of his career at renowned companies, including Kyowa Hakko Kogyo Co., Ltd. and Kyowa Hakko. His tenure in these organizations has allowed him to advance his research and development efforts, ultimately culminating in his impressive patent portfolio.

Collaborations

Throughout his career, Toshiaki Kumazawa has collaborated with notable professionals, including Hiroyuki Obase and Koji Yamada. These partnerships have enriched his research endeavors and added depth to his innovative projects, reflecting a collaborative spirit in advancing scientific knowledge.

Conclusion

Toshiaki Kumazawa stands out as a key inventor whose contributions to pharmaceutical innovations have the potential to impact countless lives. His dedication to developing effective solutions for urinary conditions demonstrates the vital role of inventors in advancing healthcare through innovative ideas and persistent research.

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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