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For the Inventor, By the Inventor

Kawagoe, Japan

Tetsuhiko Shirasaka

This inventor holds 6 USPTO granted patents and 1 published patent application. Top assignees: Otsuka Pharmaceutical Company, Limited, Taiho Pharmaceutical Company Limited, Otsuka Pharmaceutical Factory, Inc.. Active years: 1992-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetsuhiko Shirasaka. Retrieved from https://idiyas.com/inventor/tetsuhiko-shirasaka

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

USPTO Granted Patents = 6 

% Patents Active = 100.0

Average Co-Inventor Count = 5.7

ph-index = 4

Forward Citations = 71(Granted Patents)


Location History:

  • Otsu, JP (1992 - 1993)
  • Hannou, JP (1995)
  • Kawagoe, JP (1993 - 1996)

Company Filing History:

goldMedal3 out of 846 
 
Otsuka Pharmaceutical Company, Limited
 patents
silverMedal3 out of 320 
 
Taiho Pharmaceutical Company Limited
 patents
bronzeMedal1 out of 192 
 
Otsuka Pharmaceutical Factory, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1992-1996

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6 patents (USPTO):Explore Patents
1. 5525603 - Compositions, methods and kits for potentiating antitumor effect and for (1996-06-11),
2. 5480899 - Oxazolidine derivatives and pharmaceutically acceptable salts thereof (1996-01-02),
3. 5475118 - 1-phenylpyrrolidone derivatives having optical activity, intermediate (1995-12-12),
4. 5262411 - Isocephem derivatives, and antimicrobial composition containing the (1993-11-16),
5. 5204326 - Polypeptide derivatives and calcium metabolism improving agent (1993-04-20),
6. 5116600 - Composition and method for inhibiting inflammation caused by (1992-05-26),

Title: Tetsuhiko Shirasaka: Innovator in Antitumor Therapies

Introduction

Tetsuhiko Shirasaka is a notable inventor based in Kawagoe, Japan. He has made significant contributions to the field of pharmaceuticals, particularly in developing compositions and methods aimed at enhancing antitumor effects.

Latest Patents

Shirasaka holds a total of 6 patents. His latest patents include innovative compositions, methods, and kits designed to potentiate the antitumor effect of tegafur while minimizing its side effects. One of his inventions provides a composition that includes a specific compound formula, which is aimed at treating tumors effectively.

Career Highlights

Throughout his career, Tetsuhiko Shirasaka has worked with prominent companies in the pharmaceutical industry, including Taiho Pharmaceutical Company Limited and Otsuka Pharmaceutical Company, Limited. His work has been instrumental in advancing cancer treatment methodologies.

Collaborations

Shirasaka has collaborated with notable colleagues such as Shingo Yano and Tomoyasu Ohno, contributing to the development of innovative solutions in the pharmaceutical sector.

Conclusion

Tetsuhiko Shirasaka's contributions to antitumor therapies highlight his role as a significant inventor in the pharmaceutical industry. His innovative approaches continue to influence cancer treatment strategies.

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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