Kashiwazaki, Japan

Toshikatsu Hayashi

This inventor holds 8 USPTO granted patents. Top assignees: Kabushiki Kaisha Riken, Other. Active years: 1999-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshikatsu Hayashi. Retrieved from https://idiyas.com/inventor/toshikatsu-hayashi

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


% Patents Active = 75.0

Average Co-Inventor Count = 2.7

ph-index = 3

Forward Citations = 33(Granted Patents)


Location History:

  • Saitama-ken, JP (2004 - 2010)
  • Kumagaya, JP (1999 - 2016)
  • Kashiwazaki, JP (2017)
  • Niigata, JP (2018)

Company Filing History:


Years Active: 1999-2018

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8 patents (USPTO):Explore Patents

Title: Toshikatsu Hayashi: Innovator in Piston Ring Technology

Introduction

Toshikatsu Hayashi is a notable inventor based in Kashiwazaki, Japan. He has made significant contributions to the field of piston ring technology, holding a total of 8 patents. His innovative designs focus on enhancing the performance and durability of piston rings in high-output engines.

Latest Patents

One of Hayashi's latest patents involves a piston ring designed to prevent aluminum cohesion in high-output engines over extended periods. This piston ring features a silica-based coating with dispersed hard nanoparticles, achieving a Martens hardness of 1,000 to 8,000 N/mm. The hard nanoparticles used include carbon nanoparticles, nanodiamond particles, carbon nanotubes, or carbon nanofibers. Additionally, resin particles of a fluorine-based or polyether-based resin may be incorporated into the coating. Another patent describes a piston ring that has a resin-based film covering at least one of its upper and lower sides. This film contains a fibrous filler with a mean fiber diameter of 50 to 500 nm and an aspect ratio of 30 to 500, with the fibrous filler aligning roughly parallel to the film surface.

Career Highlights

Throughout his career, Hayashi has worked with prominent companies, including Kabushiki Kaisha Riken. His expertise in piston ring technology has positioned him as a key figure in the automotive industry.

Collaborations

Hayashi has collaborated with notable coworkers such as Kouhei Sugimoto and Yoshinari Watanabe. Their combined efforts have contributed to advancements in piston ring technology.

Conclusion

Toshikatsu Hayashi's innovative work in piston ring technology has led to significant advancements in engine performance and durability. His contributions continue to influence the automotive industry and inspire future innovations.

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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