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For the Inventor, By the Inventor

Shiga, Japan

Shunroku Tohyama

This inventor holds 7 USPTO granted patents. Top assignee: Toray Industries, Inc.. Active years: 1976-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shunroku Tohyama. Retrieved from https://idiyas.com/inventor/shunroku-tohyama

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

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 5

Forward Citations = 46(Granted Patents)


Location History:

  • Otsu, JA (1976)
  • Otsu, JP (1979 - 1986)
  • Shiga, JP (1983 - 1989)

Company Filing History:

goldMedal7 out of 3,581 
 
Toray Industries, Inc.
 patents

Years Active: 1976-1989

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7 patents (USPTO):Explore Patents
1. 4803116 - Waterproof fabric having high moisture permeability and method of making (1989-02-07),
2. 4794037 - Flame-proof fiber product (1988-12-27),
3. 4613529 - Inclined artifical fur and method of manufacturing the same (1986-09-23),
4. 4490149 - Modification of polyester products (1984-12-25),
5. 4420522 - Pile fabric production method using polyurethane binding agent (1983-12-13),
6. 4145371 - Flame-retardant fiber having an excellent color-fastness and preparative (1979-03-20),
7. 3944522 - Aromatic polyhydrazide fiber of high modulus and high tenacity (1976-03-16),

Title: Shunroku Tohyama: Innovator in Waterproof Fabrics and Flame-Proof Materials

Introduction

Shunroku Tohyama is a notable inventor based in Shiga, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced fabrics. With a total of 7 patents to his name, Tohyama's work focuses on enhancing the functionality and safety of textile products.

Latest Patents

Among his latest innovations is a waterproof fabric that boasts high moisture permeability. This fabric features an ultra-microporous continuous polymer coating with an average pore diameter ranging between 50 .ANG. and 0.2.mu. The polymer used contains monomer units with acid radicals, such as carboxyl groups and sulfonic acid groups. Another significant patent is for a flame-proof fiber product, which combines cellulosic and polyester fibers. This fabric is designed to be superior in flame-proofness while maintaining a soft touch, incorporating halogen- and/or phosphorus-based flame-proofing agents, along with an amino resin.

Career Highlights

Shunroku Tohyama is currently associated with Toray Industries, Inc., a leading company in the textile and materials industry. His work at Toray has allowed him to push the boundaries of fabric technology, contributing to safer and more functional materials for various applications.

Collaborations

Throughout his career, Tohyama has collaborated with esteemed colleagues, including Yutaka Masuda and Jiro Amano. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Shunroku Tohyama's contributions to the field of fabric technology highlight his role as a pioneering inventor. His innovative patents in waterproof and flame-proof materials demonstrate his commitment to advancing textile 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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