Osaka, Japan

Masatoshi Ishikawa

This inventor holds 4 USPTO granted patents and 1 published patent application. Top assignees: Sumitomo Electric Fine Polymer, Inc., Sumitomo Electric Industries, Limited, Ashimori Kogyo Kabushiki Kaisha. Active years: 1999-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masatoshi Ishikawa. Retrieved from https://idiyas.com/inventor/masatoshi-ishikawa-1piluds0

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 = 4.3

ph-index = 3

Forward Citations = 22(Granted Patents)


Location History:

  • Sennan-gun, JP (2013)
  • Osaka, JP (1999 - 2019)

Company Filing History:


Years Active: 1999-2019

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4 patents (USPTO):Explore Patents

Title: Masatoshi Ishikawa: Innovator in Polyimide Technology

Introduction

Masatoshi Ishikawa is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of materials science, particularly in the development of polyimide technology. With a total of four patents to his name, Ishikawa's work focuses on enhancing the performance of fixing belts used in image-forming apparatuses.

Latest Patents

Ishikawa's latest patents include innovations such as a polyimide tube for fixing belts. This invention aims to provide a polyimide tube that exhibits excellent toner fixability. The polyimide tube consists of a polyimide layer containing a needle-like filler, which includes carbon nanotubes and needle-like titanium oxide. The combination of these materials results in a product with a thermal diffusivity and breaking elongation that meets specific performance criteria. Additionally, he has developed a fixing belt characterized by high thermal conductivity, elasticity, and mechanical strength. This fixing belt is designed to accommodate the increasing demands of printing speed while ensuring optimal toner melting and mixing.

Career Highlights

Throughout his career, Ishikawa has worked with notable companies such as Sumitomo Electric Industries, Limited and Sumitomo Electric Fine Polymer, Inc. His experience in these organizations has allowed him to refine his expertise in polymer technology and contribute to advancements in the industry.

Collaborations

Ishikawa has collaborated with talented individuals such as Hitoshi Saito and Shingo Nakajima. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Masatoshi Ishikawa's contributions to polyimide technology and fixing belt innovations highlight his role as a key inventor in the field. His work continues to influence advancements in materials science and printing 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]
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