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For the Inventor, By the Inventor

Tokyo, Japan

Toichi Takenaka

This inventor holds 21 USPTO granted patents, plus 2 CIPO patents, primarily in Dihydropyridine Derivatives. Top assignee: Yamanouchi Pharmaceutical Company Ltd.. Active years: 1976-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toichi Takenaka. Retrieved from https://idiyas.com/inventor/toichi-takenaka

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

USPTO Granted Patents = 21

% Patents Active = 100.0


Average Co-Inventor Count = 5.3

ph-index = 8

Forward Citations = 200(Granted Patents)


Location History:

  • Tokyo, JA (1976 - 1977)
  • Ageo, JA (1977)
  • Ageo, JP (1978)
  • Tokyo, JP (1979 - 1997)

Company Filing History:

goldMedal21 out of 329 
 
Yamanouchi Pharmaceutical Company Ltd.
 patents

Years Active: 1976-1997

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Areas of Expertise:
Dihydropyridine
Phenethylamine
Calcium Antagonists
Pharmaceutical Compositions
Dihydropyridine Derivatives
Sulfamoyl Substituted
4-Carbamoylamino
Amino Derivatives
Chemical Synthesis
Composition Process
Alkylamino Compounds
Indenes
21 patents (USPTO):Explore Patents
1. 5616715 - Dihydropyridine-3, 5-dicarboxylic acid ester derivatives (1997-04-01),
2. 5591757 - Dihydropyridine composition (1997-01-07),
3. 5463064 - Dihydropyridine-3,5-dicarboxylic acid ester derivatives (1995-10-31),
4. 5364872 - Dihydropyridine-3,5-dicarboxylic acid ester derivatives (1994-11-15),
5. 5198587 - Phenethylamine derivatives (1993-03-30),
6. 5110820 - Dihydropyridine compounds which process both calcium (2+)-antagonistic (1992-05-05),
7. 5063246 - Phenethylamine derivative compositions and use (1991-11-05),
8. 4880841 - Process of producing phenethylamine derivatives (1989-11-14),
9. 4868216 - Sulfamoyl-substituted phenethylamine derivatives and process of (1989-09-19),
10. 4727082 - Dihydropyridine compounds and pharmaceutical compositions containing them (1988-02-23),
11. 4703063 - Sulfamoyl substituted phenethylamine derivatives and process of (1987-10-27),
12. 4558156 - Sulfamoyl-substituted phenethylamine derivatives (1985-12-10),
13. 4373106 - Sulfamoyl-substituted phenethylamine derivatives and process of (1983-02-08),
14. 4220649 - 1,4-Dihydropyridine-3,5-dicarboxylic acid ester derivatives (1980-09-02),
15. 4217305 - Phenylethanolamine derivatives (1980-08-12),

Title: The Innovative Journey of Toichi Takenaka

Introduction:

Toichi Takenaka is a prolific inventor based in Tokyo, JP, known for his groundbreaking contributions in the field of pharmaceutical compositions. With an impressive portfolio of 21 patents, Takenaka has established himself as a leading figure in the industry.

Latest Patents:

Among his latest patents is a revolutionary process for producing dihydropyridine-3,5-dicarboxylic acid ester derivatives. This innovative method involves subjecting a mixture of diastereoisomers to column chromatography, resulting in the separation of diastereoisomer A, essential for pharmaceutical applications. Additionally, Takenaka's dihydropyridine composition showcases pharmaceutical compositions with dual activities, making them invaluable for treating ischemic heart diseases and hypertension.

Career Highlights:

Toichi Takenaka is currently affiliated with the esteemed Yamanouchi Pharmaceutical Company Ltd., where he continues to drive innovation and push the boundaries of pharmaceutical research. His dedication to advancing the field has led to numerous breakthroughs and advancements in drug development.

Collaborations:

Throughout his career, Takenaka has collaborated closely with esteemed colleagues such as Takashi Fujikura and Kunihiro Niigata. Together, they have worked tirelessly to bring cutting-edge solutions to the forefront of the pharmaceutical industry, setting new standards for excellence and innovation.

Conclusion:

Toichi Takenaka's unwavering commitment to innovation and his remarkable contributions to the field of pharmaceutical compositions have solidified his reputation as a trailblazing inventor. His relentless pursuit of excellence and collaborative spirit continue to inspire the next generation of innovators in the pharmaceutical industry.

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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