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For the Inventor, By the Inventor

Nobeoka, Japan

Kazunori Yamataka

This inventor holds 8 USPTO granted patents. Top assignee: Asahi Kasei Kogyo Kabushiki Kaisha. Active years: 1980-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazunori Yamataka. Retrieved from https://idiyas.com/inventor/kazunori-yamataka

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 2.9

ph-index = 4

Forward Citations = 84(Granted Patents)


Location History:

  • Nobeoka, JP (1980 - 1987)
  • Yokohama, JP (1989 - 1991)

Company Filing History:

goldMedal8 out of 1,297 
 
Asahi Kasei Kogyo Kabushiki Kaisha
 patents

Years Active: 1980-1991

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8 patents (USPTO):Explore Patents
1. 5070173 - Thermoplastic polyurethane (1991-12-03),
2. 4855377 - Novel copolycarbonate (1989-08-08),
3. 4666570 - Process for producing aromatic compound with functional groups (1987-05-19),
4. 4525251 - Process for producing dimethyl esters of higher dibasic acid (1985-06-25),
5. 4487752 - Method for producing iodine or iodine derivatives (1984-12-11),
6. 4414079 - Process for the preparation of a 4-butanolide compound (1983-11-08),
7. 4323444 - Filter press-type electrolytic cell (1982-04-06),
8. 4237317 - Process for producing sebacic acid (1980-12-02),

Title: Kazunori Yamataka: Innovator in Copolycarbonate Technology

Introduction

Kazunori Yamataka, a distinguished inventor based in Nobeoka, Japan, has made significant contributions to the field of polymer chemistry. With eight patents to his name, his innovative work is primarily focused on thermoplastic polyurethanes and copolycarbonates. Yamataka's inventions are pivotal for enhancing the performance of various polymeric materials.

Latest Patents

Kazunori Yamataka's latest patents include advancements in novel copolycarbonates, which comprise recurring units of specific formulas in a controlled molar ratio. These copolycarbonates exhibit a number average molecular weight ranging from 300 to 50,000. Their unique composition offers a range of benefits including excellent resistance to hydrolysis, light, chlorine, oxidative degradation, and heat. Additionally, the polyurethane and thermoplastic elastomer derived from this copolycarbonate show improved flexibility and elastic recovery compared to conventional materials, pushing the boundaries of polymer performance.

Career Highlights

Yamataka is currently affiliated with Asahi Kasei Kogyo Kabushiki Kaisha, a leading company in the chemical industry. His role has allowed him to pioneer research and development efforts, bringing forth innovative solutions that address industrial and commercial needs in materials science.

Collaborations

Throughout his career, Kazunori Yamataka has collaborated with esteemed colleagues such as Atsushi Shimizu and Toshiro Isoya. These partnerships have contributed to a rich exchange of ideas, fostering an environment conducive to innovation.

Conclusion

Kazunori Yamataka stands out as a notable inventor whose work in copolycarbonate technology drives advancements in polymer applications. His patents not only showcase his ingenuity but also have substantial implications in various industries requiring high-performance materials. As he continues to innovate, the scientific community eagerly anticipates the future contributions of this prolific inventor.

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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