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For the Inventor, By the Inventor

Hofu, Japan

Yasuo Muramoto

This inventor holds 4 USPTO granted patents. Top assignees: Kanebo, Limited, Kanebo Synthetic Fibers Ltd.. Active years: 1987-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasuo Muramoto. Retrieved from https://idiyas.com/inventor/yasuo-muramoto

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

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 3.6

ph-index = 4

Forward Citations = 158(Granted Patents)


Location History:

  • Osaka, JP (1987)
  • Hofu, JP (1992 - 1994)

Company Filing History:

goldMedal4 out of 305 
 
Kanebo, Limited
 patents
silverMedal1 out of 14 
 
Kanebo Synthetic Fibers Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1987-1994

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4 patents (USPTO):Explore Patents
1. 5352518 - Composite elastic filament with rough surface, production thereof, and (1994-10-04),
2. 5308697 - Potentially elastic conjugate fiber, production thereof, and production (1994-05-03),
3. 5171633 - Elastic composite filament yarn and process for preparing the same (1992-12-15),
4. 4660228 - Glove (1987-04-28),

Title: Yasuo Muramoto: Innovator in Composite Elastic Filaments

Introduction

Yasuo Muramoto is a notable inventor based in Hofu, Japan. He has made significant contributions to the field of materials science, particularly in the development of composite elastic filaments. With a total of 4 patents to his name, Muramoto's work has had a considerable impact on textile technology.

Latest Patents

Among his latest patents is a composite elastic filament with a rough surface. This innovative filament consists of a sheath component made from a fiber-forming thermoplastic polymer, such as polyamide, polyester, or polyolefin. The core component is composed of a fiber-forming elastomer, such as polyurethane or polyester elastomer. The core/sheath conjugate ratio ranges from 1/1 to 100/1 by cross-sectional area. The core portion features a smooth peripheral surface that extends uniformly in the direction of the filament axis, while the sheath portion has numerous ridges that rise along the circumference and are closely spaced along the length of the filament. This filament can be produced through melt conjugate spinning, followed by drawing and relaxation. It exhibits excellent elastic properties, a low surface friction coefficient, and a matting effect due to diffuse reflection of light from the rough surface, making it particularly suitable for use in textile structures like lady's stockings.

Career Highlights

Yasuo Muramoto has worked with prominent companies in the textile industry, including Kanebo, Limited and Kanebo Synthetic Fibers Ltd. His experience in these organizations has allowed him to refine his expertise in the development of innovative materials.

Collaborations

Throughout his career, Muramoto has collaborated with notable colleagues such as Kiyoshi Yoshimoto and Masami Fujimoto. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Yasuo Muramoto's contributions to the field of composite elastic filaments demonstrate his innovative spirit and dedication to advancing textile technology. His patents reflect a commitment to creating materials that enhance both functionality and comfort in everyday products.

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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