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For the Inventor, By the Inventor

Yokohama, Japan

Yasuhisa Tashiro

This inventor holds 10 USPTO granted patents. Top assignee: Nippon Kayaku Kabushiki Kaisha. Active years: 1976-1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuhisa Tashiro. Retrieved from https://idiyas.com/inventor/yasuhisa-tashiro

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 5

Forward Citations = 42(Granted Patents)


Location History:

  • Yokohama, JA (1976 - 1977)
  • Yokohama, JP (1978 - 1987)

Company Filing History:

goldMedal10 out of 799 
 
Nippon Kayaku Kabushiki Kaisha
 patents

Years Active: 1976-1987

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10 patents (USPTO):Explore Patents
1. 4667054 - Process for producing optically active valine (1987-05-19),
2. 4628111 - N-benzyloxycarbonyl-L-threonine amide hemihydrate (1986-12-09),
3. 4582928 - Process for producing optically active phenylalanine (1986-04-15),
4. 4542236 - Process for preparing optically active phenylalanine (1985-09-17),
5. 4224239 - Process for preparing optically active amino acid or mandelic acid (1980-09-23),
6. 4198524 - Optically active amino acid-mandelic acid complexes (1980-04-15),
7. 4115439 - Process for the preparation of optically active .alpha.-phenylglycine (1978-09-19),
8. 4107203 - Optical resolution of DL-.alpha.-phenylglycine hydrochloride (1978-08-15),
9. 4002666 - Process for the preparation of optically active p-hydroxyphenylglycine (1977-01-11),
10. 3994962 - Method of manufacturing optically active p-hydroxyphenylglycine (1976-11-30),

Title: Yasuhisa Tashiro: Innovator in Optically Active Compounds

Introduction

Yasuhisa Tashiro is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of chemistry, particularly in the production of optically active compounds. With a total of 10 patents to his name, Tashiro's work has had a notable impact on various applications in the pharmaceutical industry.

Latest Patents

One of Tashiro's latest inventions is a process for producing optically active valine. This innovative process involves optically resolving DL-valine hydrochloride in a solvent containing an amine salt, a sulfonic acid, or a carboxylic acid. The method allows for the isolation of optically active valine after the decomposition of the obtained optically active valine hydrochloride. Another significant patent is for N-benzyloxycarbonyl-L-threonine amide hemihydrate, which relates to a new easily filtrable, non-hygroscopic compound. These inventions showcase Tashiro's expertise in developing efficient chemical processes.

Career Highlights

Tashiro is associated with Nippon Kayaku Kabushiki Kaisha, a company known for its advancements in pharmaceuticals and fine chemicals. His work at this organization has allowed him to focus on innovative solutions that address complex chemical challenges. Tashiro's dedication to research and development has positioned him as a key figure in his field.

Collaborations

Throughout his career, Tashiro has collaborated with notable colleagues, including Shigeru Aoki and Tadashi Shirai. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and expertise, further enhancing the quality of their research.

Conclusion

Yasuhisa Tashiro's contributions to the field of chemistry, particularly in the production of optically active compounds, highlight his innovative spirit and dedication to advancing scientific knowledge. His patents reflect a commitment to developing practical solutions that benefit 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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