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For the Inventor, By the Inventor

Kawasaki, Japan

Izumi Kumashiro

This inventor holds 5 USPTO granted patents. Top assignees: Ajinomoto Co., Ltd., Ajinomoto Company Incoporated. Active years: 1987-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Izumi Kumashiro. Retrieved from https://idiyas.com/inventor/izumi-kumashiro

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 4.5

ph-index = 3

Forward Citations = 26(Granted Patents)


Location History:

  • Tokohama, JP (1987)
  • Kawasaki, JP (1987 - 1988)
  • Yokohama, JP (1987 - 1989)

Company Filing History:

goldMedal4 out of 1,953 
 
Ajinomoto Co., Ltd.
 patents
silverMedal1 out of 1 
 
Ajinomoto Company Incoporated
 patent

Years Active: 1987-1989

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5 patents (USPTO):Explore Patents
1. 4816484 - Hypoglycemic agent (1989-03-28),
2. 4774259 - Phenylalanine derivatives and uses thereof (1988-09-27),
3. 4714713 - Phenylalanine derivatives and uses thereof (1987-12-22),
4. 4670584 - Pharmaceutical composition having an excellent absorption property (1987-06-02),
5. 4650785 - Pharmaceutical composition having an excellent absorption property (1987-03-17),

Title: Izumi Kumashiro: Innovator in Hypoglycemic Agents

Introduction

Izumi Kumashiro is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of hypoglycemic agents, with a focus on phenylalanine derivatives. His innovative work has led to the development of several patents that aim to improve medical treatments.

Latest Patents

Kumashiro holds 5 patents, with his latest inventions focusing on hypoglycemic agents. One of his notable patents is a compound of D-phenylalanine derivative for hypoglycemic use. This compound is represented by a specific general formula, where R¹ is selected from various groups, including hydrogen and alkyl chains. Another significant patent involves phenylalanine derivatives that promote the absorption of medicaments such as insulin. These compounds are not only novel but also have potential therapeutic applications.

Career Highlights

Throughout his career, Kumashiro has worked with prominent companies, including Ajinomoto Co., Ltd. and Ajinomoto Company Incorporated. His experience in these organizations has allowed him to develop and refine his innovative ideas in the pharmaceutical field.

Collaborations

Kumashiro has collaborated with several professionals in his field, including Yoshiko Seto and Koji Fukushima. These collaborations have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Izumi Kumashiro's work in the field of hypoglycemic agents showcases his dedication to innovation and improvement in medical treatments. His contributions through patents and collaborations highlight the importance of research in advancing healthcare solutions.

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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