Annaka, Japan

Nobumasa Tomizawa

This inventor holds 10 USPTO granted patents. Top assignees: Shin-Etsu Chemical Co., Ltd., Shin-Etsu Chemical Ltd.. Active years: 1993-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nobumasa Tomizawa. Retrieved from https://idiyas.com/inventor/nobumasa-tomizawa

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


% Patents Active = 70.0

Average Co-Inventor Count = 3.1

ph-index = 5

Forward Citations = 59(Granted Patents)


Location History:

  • Gunma, JP (1993)
  • Harunamachi, JP (1994)
  • Usui-gun, JP (2001)
  • Gunma-ken, JP (2000 - 2007)
  • Annaka, JP (2009 - 2019)

Company Filing History:


Years Active: 1993-2026

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10 patents (USPTO):Explore Patents

Title: Nobumasa Tomizawa: Innovator in Thermal Conductive Materials

Introduction

Nobumasa Tomizawa is a prominent inventor based in Annaka, Japan. He has made significant contributions to the field of thermal conductive materials, holding a total of 10 patents. His work focuses on developing innovative silicone rubber compositions that enhance thermal conductivity and performance in various applications.

Latest Patents

Tomizawa's latest patents include a silicone rubber composition designed for highly heat conductive thermal fixing rolls and belts. This composition boasts high thermal conductivity, low compression set, and improved heat resistance, making it ideal for use as a coating material in fixing rolls or belts. The formulation consists of 100 parts by weight of a heat-curable silicone rubber composition combined with 50 to 800 parts by weight of silicon carbide, which has a low iron content and a specific particle size. Another notable patent involves a thermally conductive silicone rubber sponge composition, which is lightweight and features high thermal conductivity, small heat capacity, and low permanent compression set.

Career Highlights

Nobumasa Tomizawa is currently associated with Shin-Etsu Chemical Co., Ltd., where he continues to innovate in the field of silicone materials. His expertise in developing advanced thermal conductive compositions has positioned him as a key figure in the industry.

Collaborations

Throughout his career, Tomizawa has collaborated with notable colleagues, including Noriyuki Meguriya and Satao Hirabayashi. These partnerships have contributed to the advancement of technology in thermal materials.

Conclusion

Nobumasa Tomizawa's work in silicone rubber compositions has significantly impacted the field of thermal conductivity. His innovative patents and collaborations highlight his dedication to advancing 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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