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For the Inventor, By the Inventor

Kanagawa, Japan

Motoyuki Yamato

This inventor holds 14 USPTO granted patents. Top assignees: Nippon Zeon Company, Ltd., The B. F. Goodrich Company. Active years: 1976-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Motoyuki Yamato. Retrieved from https://idiyas.com/inventor/motoyuki-yamato

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

USPTO Granted Patents = 14

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 5

Forward Citations = 70(Granted Patents)


Location History:

  • Kawasaki, JA (1976)
  • Kamakura, JP (1980 - 1981)
  • Oiso, JP (1984)
  • Naka, JP (1991 - 1992)
  • Kanagawa, JP (1989 - 1993)

Company Filing History:

goldMedal13 out of 598 
 
Nippon Zeon Company, Ltd.
 patents
silverMedal1 out of 1,484 
 
The B. F. Goodrich Company
 patents

Years Active: 1976-1993

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14 patents (USPTO):Explore Patents
1. 5204427 - Method of making ring-opened polynorbornene polymers using pot life (1993-04-20),
2. 5169691 - Coated polynorbornene product and method therefor (1992-12-08),
3. 5138003 - Ring opening method and reaction solution (1992-08-11),
4. 5137785 - Composite material and process for preparation thereof (1992-08-11),
5. 5102589 - Method of making pore-free molding with thick section (1992-04-07),
6. 5098750 - Composite molded articles and method therefor (1992-03-24),
7. 5091263 - Coated polynorbornene products (1992-02-25),
8. 5063103 - Reinforced polymeric matrix (1991-11-05),
9. 4952348 - Process for preparing shaped article having thick section (1990-08-28),
10. 4853435 - Process for preparing thermosetting resin (1989-08-01),
11. 4451637 - Epoxy resin composition (1984-05-29),
12. 4283343 - Process for producing liquid dibasic acid anhydrides (1981-08-11),
13. 4226779 - Process for isomerizing methyl-delta-4-tetrahydrophthalic anhydride (1980-10-07),
14. 3954897 - Process for preparing polymer oils and polymer oils prepared thereby (1976-05-04),

Title: Motoyuki Yamato: Innovator in Polymer Chemistry

Introduction

Motoyuki Yamato is a distinguished inventor based in Kanagawa, Japan. He has made significant contributions to the field of polymer chemistry, holding a total of 14 patents. His innovative work has led to advancements in the production and application of polynorbornene polymers.

Latest Patents

Yamato's latest patents include a method for making ring-opened polynorbornene polymers using a reaction solution that comprises a mixture of tricyclopentadiene, a norbornene monomer with at least three rings in its backbone, and a pot life adjusting agent. This method allows for prolonged pot life without extending the time to exotherm, enabling the bulk polymerization of reinforced or unreinforced articles in a mold via ring-opening polymerization. The resulting articles exhibit excellent physical properties and outward appearance. Another notable patent involves a coated polynorbornene product, which features a ring-opened base polymer and a thin polymer film that enhances weatherability and reduces odor.

Career Highlights

Throughout his career, Yamato has worked with prominent companies such as Nippon Zeon Company, Ltd. and The B. F. Goodrich Company. His experience in these organizations has allowed him to refine his expertise in polymer chemistry and contribute to various innovative projects.

Collaborations

Yamato has collaborated with notable coworkers, including Kin-ichi Okumura and Shoji Suzuki. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the field.

Conclusion

Motoyuki Yamato's contributions to polymer chemistry and his innovative patents have significantly impacted the industry. His work continues to inspire future advancements in the field of materials science.

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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