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For the Inventor, By the Inventor

Otake, Japan

Masashi Okamoto

This inventor holds 9 USPTO granted patents. Top assignee: Mitsubishi Rayon Company, Limited. Active years: 1988-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masashi Okamoto. Retrieved from https://idiyas.com/inventor/masashi-okamoto-ikgjs1p8

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

Calculating rank
USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 5

Forward Citations = 64(Granted Patents)


Location History:

  • Otake, JP (1990 - 2003)
  • Hiroshima, JP (1988 - 2005)

Company Filing History:

goldMedal9 out of 1,357 
 
Mitsubishi Rayon Company, Limited
 patents

Years Active: 1988-2005

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9 patents (USPTO):Explore Patents
1. 6871000 - Plastic optical fiber, optical fiber cable, plugged optical fiber cable, and production methods thereof (2005-03-22),
2. 6569523 - Carbon fiber bundle (2003-05-27),
3. 6503624 - Carbon fiber precursor fiber bundle and manufacturing method of the same (2003-01-07),
4. 5911931 - Resin forming method (1999-06-15),
5. 5882690 - Resin forming nozzle device and resin forming method using same (1999-03-16),
6. 5127079 - Multifilament type plastic optical fiber endoscope (1992-06-30),
7. 4980012 - Apparatus for preparation of a sheet-shaped photoconductor (1990-12-25),
8. 4781832 - Hollow-fiber filter module (1988-11-01),
9. 4720342 - Hollow-fiber filter module with filtrate conduit (1988-01-19),

Title: Masashi Okamoto: Innovator in Optical and Carbon Fiber Technologies

Introduction

Masashi Okamoto is a prominent inventor based in Otake, Japan. He has made significant contributions to the fields of optical and carbon fiber technologies. With a total of 9 patents to his name, Okamoto's work has advanced the understanding and application of these materials in various industries.

Latest Patents

Okamoto's latest patents include innovations in plastic optical fibers and carbon fiber bundles. One of his notable inventions is a production method for plastic optical fibers, which involves heat drawing an undrawn plastic optical fiber obtained by melt spinning. This method ensures that the resulting fiber has a small thermal shrinkage ratio and excellent heat resistance. Additionally, he has developed a carbon fiber precursor fiber bundle that enhances the compactness and processing ability of carbon fibers, improving their strength and bulkiness.

Career Highlights

Masashi Okamoto is associated with Mitsubishi Rayon Company, Limited, where he has been instrumental in developing advanced materials. His expertise in fiber technology has positioned him as a key figure in the industry, contributing to innovations that meet the demands of modern applications.

Collaborations

Okamoto has worked alongside notable colleagues such as Tohru Takemura and Haruhiko Yoshida. Their collaborative efforts have furthered research and development in fiber technologies, leading to groundbreaking advancements.

Conclusion

Masashi Okamoto's contributions to optical and carbon fiber technologies have made a lasting impact on the industry. His innovative patents and collaborative work continue to inspire advancements in material 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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