Saitama, Japan

Masatoshi Hayashi

This inventor holds 2 USPTO granted patents. Top assignee: Taisho Pharmaceutical Co., Ltd.. Active years: 1989-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masatoshi Hayashi. Retrieved from https://idiyas.com/inventor/masatoshi-hayashi-94ibp3t9

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 4.8

ph-index = 1

Forward Citations = 11(Granted Patents)


Company Filing History:


Years Active: 1989-1990

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2 patents (USPTO):Explore Patents

Title: Masatoshi Hayashi: Innovator in Pharmaceutical Chemistry

Introduction: Masatoshi Hayashi is a renowned inventor based in Saitama, Japan. With a total of two patents to his name, he specializes in the development of novel compounds with significant therapeutic benefits, particularly in treating cerebrovascular and peripheral vessel injuries.

Latest Patents: Hayashi's latest patents include innovative derivatives of apovincaminic acid and vincaminic acid. The first patent focuses on apovincaminic acid derivatives, which are represented by a specific formula and include pharmaceutically acceptable salts. These compounds demonstrate utility in the treatment of cerebrovascular injuries, peripheral vessel injuries, angina pectoris, hypertension, and senile dementia. The second patent covers acylated vincaminic acid derivatives, which also have therapeutic effects on cerebrovascular injuries. These compounds are characterized by various structural components, including alkyl and alkoxyalkyl groups, which enhance their medicinal properties.

Career Highlights: Masatoshi Hayashi is associated with Taisho Pharmaceutical Co., Ltd., where he has made significant contributions to pharmaceutical innovation. His work has not only resulted in new patents but has also influenced therapeutic approaches to several cardiovascular and neurological conditions.

Collaborations: Throughout his career, Hayashi has collaborated with talented colleagues, including Sadakazu Yokomori and Yoshimoto Nakashima. These partnerships have fostered an environment of innovation and have advanced the research efforts at Taisho Pharmaceutical Co., Ltd.

Conclusion: Masatoshi Hayashi stands out in the field of pharmaceutical chemistry for his contributions to the development of impactful therapeutic compounds. His patents on apovincaminic acid and vincaminic acid derivatives highlight his commitment to improving healthcare outcomes and illustrate the importance of collaborative efforts in achieving scientific advancements.

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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