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For the Inventor, By the Inventor

Ichihara, Japan

Eiji Tamura

This inventor holds 6 USPTO granted patents and 1 EPO patent. Top assignees: Idemitsu Petrochemical Co., Ltd., Idemitsu Kosan Company, Limited, Showa Aluminum Corporation. Active years: 1992-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiji Tamura. Retrieved from https://idiyas.com/inventor/eiji-tamura-1o2620l5

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

Calculating rank
USPTO Granted Patents = 6

% Patents Active = 50.0


Average Co-Inventor Count = 3.0

ph-index = 3

Forward Citations = 58(Granted Patents)


Location History:

  • Sakai, JP (1992)
  • Ichihara, JP (1999 - 2013)
  • Chiba, JP (2013)

Company Filing History:

goldMedal4 out of 555 
 
Idemitsu Petrochemical Co., Ltd.
 patents
silverMedal2 out of 2,283 
 
Idemitsu Kosan Company, Limited
 patents
bronzeMedal1 out of 152 
 
Showa Aluminum Corporation
 patents
where one patent can have more than one assignee

Years Active: 1992-2013

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6 patents (USPTO):Explore Patents
1. 8492485 - Polycarbonate resin composition for sliding use and molded article using the resin composition (2013-07-23),
2. 8487042 - Polyarylene sulfide resin composition and a molded article formed therefrom (2013-07-16),
3. 6534124 - Method of producing the plated molded articles by non-electrode plating, and the resin compositions for that use (2003-03-18),
4. 6299942 - Method of producing the plated molded articles by non-electrode plating, and the resin compositions for that use (2001-10-09),
5. 5985974 - Slide member for parts to be in contact with magnetic tape (1999-11-16),
6. 5098751 - Food packaging container (1992-03-24),

Title: Eiji Tamura: Innovator in Resin Composition Technology

Introduction

Eiji Tamura is a notable inventor based in Ichihara, Japan. He has made significant contributions to the field of resin compositions, holding a total of 6 patents. His work focuses on enhancing the properties of polycarbonate and polyarylene sulfide resin compositions, which are crucial in various industrial applications.

Latest Patents

One of Eiji Tamura's latest patents is a polycarbonate resin composition designed for sliding use. This innovative composition includes 0.01 to 1 part by mass of an antioxidant relative to 100 parts by mass of a polycarbonate-polyorganosiloxane copolymer. The copolymer features structural units represented by specific general formulas, ensuring improved wear resistance and sliding properties. Additionally, he has developed a polyarylene sulfide resin composition, which also contributes to advancements in molded articles.

Career Highlights

Throughout his career, Eiji Tamura has worked with prominent companies such as Idemitsu Petrochemical Co., Ltd. and Idemitsu Kosan Company, Limited. His experience in these organizations has allowed him to refine his expertise in resin technology and contribute to innovative solutions in the industry.

Collaborations

Eiji Tamura has collaborated with notable colleagues, including Wataru Kosaka and Toshimi Arashi. These partnerships have fostered a creative environment that has led to the development of groundbreaking resin compositions.

Conclusion

Eiji Tamura's contributions to resin composition technology highlight his innovative spirit and dedication to improving material properties. His patents reflect a commitment to advancing the field and addressing industry needs.

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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