Tokyo, Japan

Masayuki Kawashiro

This inventor holds 3 USPTO granted patents. Top assignee: Daiwa Seiko, Inc.. Active years: 1990-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masayuki Kawashiro. Retrieved from https://idiyas.com/inventor/masayuki-kawashiro

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 3

Forward Citations = 23(Granted Patents)


Company Filing History:


Years Active: 1990-1997

Loading Chart...
3 patents (USPTO):Explore Patents

Title: The Brilliant Innovations of Masayuki Kawashiro

Introduction

Masayuki Kawashiro, a prominent inventor based in Tokyo, Japan, has made significant contributions to the fishing industry through his innovative designs of spinning reels. With a total of three patents to his name, Kawashiro's inventions reflect a deep understanding of fishing mechanics and user needs, aiming to enhance the fishing experience for enthusiasts.

Latest Patents

One of Kawashiro's latest patents is the "Spinning reel for fishing having fish-line entry restrainer." This invention features a rotor that is rotatably fitted to a reel body, along with a spool that is capable of traversing in the axial direction. A key highlight is the fishing-line entry restrainer, designed to prevent the fishing line from being improperly wound on the spool shaft, ensuring smoother operation. The follow-up mechanism allows the restrainer to move forward simultaneously with the spool, enhancing functionality.

Another notable patent is the "Spinning reel for fishing" that includes a slider designed to restrict play and clatter during operation. This reel enhances the durability and strength of the slider through unique engaging portions on the inner surface of the reel casing and precise sliding contact surfaces, ensuring a more reliable performance.

Career Highlights

Masayuki Kawashiro is currently employed at Daiwa Seiko, Inc., a leading company in the fishing tackle industry. His role as an inventor allows him to focus on developing cutting-edge technologies that redefine how fishing reels function. His commitment to innovation has positioned him as a valuable asset to the company, helping to set new industry standards.

Collaborations

Throughout his career, Kawashiro has had successful collaborations with notable colleagues such as Nobuyuki Yamaguchi and Shinji Takeuchi. This teamwork fosters a creative environment where innovative ideas can flourish, contributing to the advancement of fishing technology and enhancing the overall quality of their products.

Conclusion

Masayuki Kawashiro stands out as a dedicated inventor within the fishing equipment domain, with patents that reflect his ingenuity and commitment to improving angling experiences. Through his work at Daiwa Seiko, Inc. and his collaborations with fellow innovators, Kawashiro continues to make waves in the fishing industry, ensuring that every fishing adventure is supported by reliable and advanced technology.

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]
Loading…