Tokyo, Japan

Katsuhiko Hironaka

This inventor holds 14 USPTO granted patents and 1 published patent application and 4 EPO patents. Top assignees: Teijin Limited, Teijin Chemicals Limited, Stamicarbon B.v.. Active years: 1990-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuhiko Hironaka. Retrieved from https://idiyas.com/inventor/katsuhiko-hironaka

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

Calculating rank
USPTO Granted Patents = 14 

% Patents Active = 50.0

 

Average Co-Inventor Count = 2.5

ph-index = 4

Forward Citations = 34(Granted Patents)


Location History:

  • Sagamihara, JP (1990 - 1992)
  • Chiba, JP (1998 - 2003)
  • Chiyoda-ku, JP (2007 - 2013)
  • Tokyo, JP (2006 - 2014)

Company Filing History:


Years Active: 1990-2014

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14 patents (USPTO):Explore Patents

Title: Innovator Katsuhiko Hironaka: Pioneering Resin Technologies

Introduction

Katsuhiko Hironaka is a prominent inventor based in Chiyoda-ku, Japan. With an impressive portfolio of 14 patents, Hironaka has made significant contributions to the field of resin technologies. His innovations focus on making materials that are not only functional but also environmentally friendly.

Latest Patents

Among Hironaka's latest patents, two stand out for their advanced concepts in resin composition. The first patent describes a resin composition that includes polylactic acid, specifically a blend of poly-L-lactic acid and poly-D-lactic acid. This resin composition exhibits a weight ratio of B-1 to B-4 ranging from 10/90 to 90/10 and demonstrates a specified proportion of melt peaks during measurement processes, making it suitable for a variety of molded articles.

The second patent highlights a flame-retardant polycarbonate resin composition featuring an ether diol derived from isosorbide. This composition excels in flame retardancy, heat resistance, and stability, all while maintaining transparency and moldability. It comprises a specific weight proportion of a phosphorus compound to polycarbonate resin, aimed at enhancing safety and performance.

Career Highlights

Throughout his career, Katsuhiko Hironaka has worked with notable companies such as Teijin Limited and Teijin Chemicals Limited. His experience with these organizations has allowed him to refine his expertise and focus on pioneering innovations in resin technologies that benefit various industries.

Collaborations

Hironaka has collaborated with esteemed professionals in the field, including Toshiyuki Miyake and Masami Kinoshita. These partnerships have enabled him to enhance his research and development efforts, further contributing to impactful innovations.

Conclusion

Katsuhiko Hironaka's work in resin technology showcases the importance of innovation in material science. With 14 patents to his name, he continues to push the boundaries of what is possible, creating new solutions that are both effective and responsible. His commitment to excellence serves as an inspiration to fellow inventors and engineers around the globe.

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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