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For the Inventor, By the Inventor

Ibaraki, Japan

Isao Yamatsu

This inventor holds 84 USPTO granted patents, plus 2 CIPO patents, primarily in Pharmaceutical Chemistry (CPC class 260413). Top assignees: Eisai Company, Limited, Agency of Industrial Science and Technology, Eisai Inc.. Active years: 1977-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Isao Yamatsu. Retrieved from https://idiyas.com/inventor/isao-yamatsu

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

USPTO Granted Patents = 84

% Patents Active = 100.0

 

Average Co-Inventor Count = 9.2

ph-index = 10

Forward Citations = 451(Granted Patents)

Forward Citations (Not Self Cited) = 421(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JA (1977)
  • Tokyo, JP (1978)
  • Saitama, JP (1979 - 1990)
  • Kawaguchi, JP (1979 - 1991)
  • Inashiki, JP (1991)
  • Ushikumachi, JP (1984 - 1997)
  • Ushiku, JP (1986 - 1997)
  • Ibaraki, JP (1989 - 1998)
  • Inashiki-gun, JP (2000)
  • Ibaragi, JP (1986 - 2001)

Company Filing History:

goldMedal83 out of 677 
 
Eisai Company, Limited
 patents
silverMedal2 out of 1,430 
 
Agency of Industrial Science and Technology
 patents
bronzeMedal1 out of 33 
 
Eisai Inc.
 patents
4. 1 out of 371 
 
Nagoya University
 patents
where one patent can have more than one assignee

Years Active: 1977-2001

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Areas of Expertise:
Pharmaceutical Composition
Aminobenzoic Acid Derivatives
Dihydropolyprenyl Compounds
Diazepine Derivatives
Benzothiazole Compounds
Naphthalene Derivatives
Triazolo-1,4-Diazepine
Glycerin Derivatives
Quinone Derivatives
Diphenylethylene Derivatives
Therapeutic Agents
84 patents (USPTO):Explore Patents
1. 6288128 - &bgr;,&ggr;-dihydropolyprenyl alcohol derivatives and pharmaceutical composition containing a polyprenyl compound (2001-09-11),
2. 6111131 - Beta, gamma-dihydropolyprenyl alcohol derivatives and pharmaceutical (2000-08-29),
3. 5854279 - Therapeutic agent for dermatosis (1998-12-29),
4. 5789446 - Therapeutic agent for treating joint diseases associated with arthritis (1998-08-04),
5. 5658958 - .beta., .gamma.-dihydropolyprenyl alcohol derivatives effective at (1997-08-19),
6. 5635519 - Benzothiazole compounds which are substituted by pyridymethyl (1997-06-03),
7. 5631402 - Process for preparing aminobenzoic acid derivatives (1997-05-20),
8. 5612356 - Heterocycle-containing carbonic acid derivatives (1997-03-18),
9. 5599972 - Aminobenzoic acid derivatives (1997-02-04),
10. 5578603 - Aminobenzoic acid derivatives (1996-11-26),
11. 5527948 - Naphthalene derivative (1996-06-18),
12. 5482937 - 1,4-diazepine derivative and its pharmaceutical use (1996-01-09),
13. 5476864 - Glycerin derivative and its pharmacological use (1995-12-19),
14. 5476863 - Glycerin derivative and its pharmacological use (1995-12-19),
15. 5468740 - 1,4-diazepine derivative and its pharmaceutical use (1995-11-21),

Title: The Innovative Journey of Inventor Isao Yamatsu

Introduction: Isao Yamatsu, a pioneering inventor hailing from Ibaraki, Japan, has made significant contributions to the world of technology through his groundbreaking innovations.

Latest Patents: Isao Yamatsu's latest patents focus on advancements in renewable energy technologies, particularly in the field of solar power generation and energy storage solutions.

Career Highlights: With a career spanning over two decades, Isao Yamatsu has established himself as a leading figure in the renewable energy sector. His work has led to the development of cutting-edge technologies that have revolutionized the way we harness and utilize clean energy sources.

Collaborations: Throughout his career, Isao Yamatsu has collaborated with top research institutions and leading technology companies to further his research and bring his innovative ideas to life. His partnerships have been instrumental in pushing the boundaries of renewable energy technologies.

Conclusion: In conclusion, Isao Yamatsu's passion for innovation and commitment to sustainability have cemented his legacy as a visionary inventor in the field of renewable energy. His contributions continue to inspire future generations of inventors to push the boundaries of what is possible in the pursuit of a more sustainable future.

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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