Saitama, Japan

Noritoshi Koyama

This inventor holds 4 USPTO granted patents. Top assignee: Eisai Company, Limited. Active years: 1984-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Noritoshi Koyama. Retrieved from https://idiyas.com/inventor/noritoshi-koyama

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


% Patents Active = 100.0

Average Co-Inventor Count = 5.0

ph-index = 3

Forward Citations = 77(Granted Patents)


Location History:

  • Saitama, JP (1984 - 1989)
  • Ibaraki, JP (1991)

Company Filing History:


Years Active: 1984-1991

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4 patents (USPTO):Explore Patents

Title: Noritoshi Koyama: Innovator in Pharmaceutical Preparations

Introduction

Noritoshi Koyama is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of pharmaceuticals, particularly in the development of innovative drug formulations. With a total of 4 patents to his name, Koyama continues to push the boundaries of pharmaceutical science.

Latest Patents

Koyama's latest patents include a peroral preparation of an acid-unstable compound. This preparation consists of a core containing the acid-unstable compound, a first layer made of a hardly water-soluble, film-forming material, and a second layer of enteric film. The acid-unstable compound is identified as a benzimidazole compound. Another significant patent involves an aqueous solution containing a lipid-soluble active vitamin substance and/or ubiquinone. This solution, which has a pH of 5.5-8, also includes hydrogenated lecithin and neutral amino acids, making it stable and easy to prepare.

Career Highlights

Koyama is currently associated with Eisai Company, Limited, where he applies his expertise in pharmaceutical innovations. His work has been instrumental in developing formulations that enhance the stability and efficacy of various compounds.

Collaborations

Koyama has collaborated with notable colleagues such as Katsumi Ida and Toru Takami. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Noritoshi Koyama is a distinguished inventor whose work in pharmaceutical preparations has led to significant advancements in the field. His innovative patents reflect his commitment to improving drug formulations and enhancing patient care.

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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