Yoji Yamagishi

This inventor holds 9 USPTO granted patents. Top assignees: Eisai Company, Limited, Eisai Chemical Co., Ltd., Eisai Chemical. Active years: 1996-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoji Yamagishi. Retrieved from https://idiyas.com/inventor/yoji-yamagishi

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 = 5.9

ph-index = 2

Forward Citations = 5(Granted Patents)

Company Filing History:

9 out of 677

Eisai Company, Limited

patents

6 out of 21

Eisai Chemical Co., Ltd.

where one patent can have more than one assignee

Years Active: 1996-1997

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5700938 - Intermediates for imidazopyridine derivatives (1997-12-23),

2. 5637716 - Processes for the preparation of hydroquinone and benzoquinone (1997-06-10),

3. 5618969 - Intermediates for imidazopyridines (1997-04-08),

4. 5608068 - Process for the preparation of imidazopyridine derivatives and (1997-03-04),

5. 5587504 - Sulfonyloxy-biphenylcarboxylic ester derivatives which are intermediates (1996-12-24),

6. 5583229 - Process for the preparation of imidazopyridine derivatives (1996-12-10),

7. 5559236 - Intermediates for substituted biphenylmethylmidazopyridine angiotensin (1996-09-24),

8. 5557002 - Process for the preparation of biphenyl containing intermediates useful (1996-09-17),

9. 5554757 - Process for the preparation of imidazopyridine derivatives, and (1996-09-10),

Title: Yoji Yamagishi: Innovator in Pharmaceutical Chemistry

Introduction

Yoji Yamagishi is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of pharmaceutical chemistry, holding a total of nine patents. His work focuses on developing innovative processes and compounds that have practical applications in medicine.

Latest Patents

One of Yamagishi's latest patents involves intermediates for imidazopyridine derivatives. This invention provides an industrially advantageous process for preparing a specific derivative that acts as an antagonist against the angiotensin II receptor, which is useful as an antihypertensive drug. The process allows for the preparation of a 2-alkyl-3-(biphenyl-4-yl)methyl-3H-imidazo[4,5-b]pyridine derivative in high yield. This is achieved through a series of chemical reactions, including amidation, N-alkylation, and reductive cyclization. The biphenyl derivative produced is noted for its excellent reactivity and purity, making it suitable for industrial production.

Career Highlights

Throughout his career, Yamagishi has worked with notable companies, including Eisai Company, Limited and Eisai Chemical Co., Ltd. His experience in these organizations has contributed to his expertise in pharmaceutical development and innovation.

Collaborations

Yamagishi has collaborated with several professionals in his field, including Ken Furukawa and Yoshio Urawa. These collaborations have likely enhanced his research and development efforts, leading to successful innovations.

Conclusion

Yoji Yamagishi is a distinguished inventor whose work in pharmaceutical chemistry has led to significant advancements in drug development. His innovative processes and compounds continue to impact the industry positively.

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]