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For the Inventor, By the Inventor

Hino, Japan

Hisao Yamaguchi

This inventor holds 9 USPTO granted patents, plus 3 CIPO patents. Top assignee: Teijin Limited. Active years: 1979-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisao Yamaguchi. Retrieved from https://idiyas.com/inventor/hisao-yamaguchi

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

USPTO Granted Patents = 9

% Patents Active = 100.0

 

Average Co-Inventor Count = 6.0

ph-index = 6

Forward Citations = 203(Granted Patents)


Company Filing History:

goldMedal9 out of 1,605 
 
Teijin Limited
 patents

Years Active: 1979-1997

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9 patents (USPTO):Explore Patents
1. 5661148 - Pyrrolo[2,3-d]pyrimidine derivatives, process for producing the same and (1997-08-26),
2. 5614520 - 2-arylthiazole derivatives and pharmaceutical composition thereof (1997-03-25),
3. 5574061 - Benzopyran derivative, process for producing the same and pharmaceutical (1996-11-12),
4. 5496853 - Benzoxa condensed ring compounds, process for producing the same and (1996-03-05),
5. 5378700 - Fused pyrimidine derivative, process for preparation of same and (1995-01-03),
6. 4578395 - Certain aralkylaminoalkyl esters of 1,4 dihydropyridines as (1986-03-25),
7. 4500639 - Culturing Bordetella in media containing etherified cyclodextrin (1985-02-19),
8. 4434159 - Pharmaceutical composition for intrarectal administration, and (1984-02-28),
9. 4138553 - 3-Methylene cephalosporanic acid derivatives and process for preparation (1979-02-06),

Title: Hisao Yamaguchi: A Pioneer in Pharmaceutical Innovations

Introduction

Hisao Yamaguchi, an esteemed inventor based in Hino, Japan, has made significant contributions to the field of pharmaceuticals. With a remarkable portfolio that includes nine patents, Yamaguchi has focused on developing innovative compounds that address various medical conditions.

Latest Patents

Yamaguchi's latest innovations include the following notable patents:

1. **Pyrrolo[2,3-d]pyrimidine derivatives**, which detail a process for producing compounds that have significant pharmaceutical applications. The patent outlines a pyrrolo[2,3-d]pyrimidine derivative represented by a specific general formula, including pharmaceutically acceptable acid addition salts and related pharmaceutical preparations.

2. **2-arylthiazole derivatives and pharmaceutical composition thereof**, which introduce new compositions for treating gout or hyperuricemia. These compounds are represented by a unique formula and are aimed at delivering effective treatment options to patients suffering from these conditions.

Career Highlights

Yamaguchi's career is marked by his affiliation with Teijin Limited, a prominent company in the pharmaceutical industry. His work has not only resulted in valuable patents but has also brought forward new therapeutic compounds that could potentially impact patient care.

Collaborations

Throughout his career, Yamaguchi has collaborated with other prominent figures in the field. Notably, his colleagues Kenichiro Kataoka and Masaichi Hasegawa have worked alongside him, contributing to the innovation and development of pharmaceutical technologies.

Conclusion

Hisao Yamaguchi's innovative spirit and dedication to research have established him as a vital contributor to pharmaceutical advancements. His patents have paved the way for potential breakthroughs in medical therapies, underscoring the importance of continually pushing the boundaries of science and innovation.

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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