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For the Inventor, By the Inventor

Nara, Japan

Masami Eigyo

This inventor holds 16 USPTO granted patents, primarily in Pharmaceutical Chemistry. Top assignees: Shionogi Company Limited, Shionigi & Co., Ltd.. Active years: 1981-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masami Eigyo. Retrieved from https://idiyas.com/inventor/masami-eigyo

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

Calculating rank
USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 4.5

ph-index = 7

Forward Citations = 216(Granted Patents)


Location History:

  • Kawanishi, JP (1981)
  • Nara, JP (1985 - 1995)
  • Ikoma, JP (1993 - 1997)

Company Filing History:

goldMedal15 out of 1,001 
 
Shionogi Company Limited
 patents
silverMedal1 out of 1 
 
Shionigi & Co., Ltd.
 patent

Years Active: 1981-1997

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Areas of Expertise:
Oxopyridinylquinoxaline
Tetrahydropyridine
Carbamoylpyrrolidone
Psychotropic Agents
Imidazopyridine
Benzodiazepine
Drug Formulation
Cerebral Inhibition
Senile Dementia
Carbonylimidazoquinolines
Piperazine Derivatives
16 patents (USPTO):Explore Patents
1. 5677305 - Oxopyridinylquinoxaline derivative (1997-10-14),
2. 5410058 - Tetrahydropyridine derivatives (1995-04-25),
3. 5362873 - Tetrahydropyridine derivatives (1994-11-08),
4. 5243051 - Tetrahydropyridine derivatives (1993-09-07),
5. 5242915 - Formulation useful for the inhibition of massive release of cerebral (1993-09-07),
6. 5202345 - Carbamoylpyrrolidone derivatives and drugs for senile dementia (1993-04-13),
7. 5149817 - Teirahydropyridine derivatives (1992-09-22),
8. 5120733 - Carbamoylpyrrolidone derivatives and drugs for senile dementia (1992-06-09),
9. 4977167 - Carbamoylpyrolidone derivatives and drugs for senile dementia (1990-12-11),
10. 4940714 - 2-substituted carbonylimidazo[4,5-c]quinolines (1990-07-10),
11. 4923984 - Pyrrolo(1,4)benzodiazepine derivatives (1990-05-08),
12. 4904663 - N-(2-oxpyrrolidin-1-yl-)acetyl)piperazine derivatives and drug for (1990-02-27),
13. 4753951 - Condensed imidazopyridine derivatives useful as psychotropic agents (1988-06-28),
14. 4690930 - Pyrazolo[4,3-c]quinoline-3-one and imidazo[4,3-c]cinnolin-3-one (1987-09-01),
15. 4560684 - 1,4-Benzodiazepine derivatives (1985-12-24),

Title: **Masami Eigyo: Innovator in Neuropharmacology and Tetrahydropyridine Derivatives**

Introduction

Masami Eigyo, an esteemed inventor based in Nara, Japan, has made significant contributions to the field of neuropharmacology. With a remarkable portfolio of 16 patents, his work focuses on developing novel compounds that hold promise for treating various neurological and psychological disorders. His innovative approach has garnered attention within the scientific community and among pharmaceutical companies.

Latest Patents

Among his latest inventions, Eigyo has developed an **Oxopyridinylquinoxaline derivative**, represented by a specific chemical formula. This derivative offers potential therapeutic benefits as an antagonistic agent against both NMDA and AMPA receptors. As such, it may play a crucial role in treating neurological disorders linked to excitatory amino acids interacting with these receptors. Additionally, his work on **Tetrahydropyridine derivatives** has demonstrated high affinity and specificity for sigma receptors, indicating potential applications in managing certain types of psychoses.

Career Highlights

Masami Eigyo has worked with reputable organizations, including Shionogi & Company Limited and Shionogi & Co., Ltd. His career has been marked by a dedication to advancing pharmacological research and developing innovative therapeutic agents. Through his patents, Eigyo continues to influence the landscape of neurological treatment options.

Collaborations

Throughout his career, Eigyo has collaborated with esteemed colleagues such as Akira Matsushita and Hiromu Matsumura, who have contributed to his research endeavors. These collaborations have fostered an environment of innovation and knowledge exchange, leading to significant breakthroughs in the field.

Conclusion

In conclusion, Masami Eigyo is a prominent inventor whose work has the potential to change the treatment landscape for neurological and psychological disorders. His innovative patents and collaborations reflect a commitment to advancing medical science, and his contributions will likely continue to inspire future research and development in pharmaceuticals.

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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