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For the Inventor, By the Inventor

Chiba, Japan

Shigeru Murakami

This inventor holds 5 USPTO granted patents. Top assignees: Idemitsu Kosan Company, Limited, Other. Active years: 1988-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shigeru Murakami. Retrieved from https://idiyas.com/inventor/shigeru-murakami

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 3

Forward Citations = 45(Granted Patents)


Location History:

  • Sodegaura, JP (1988 - 1992)
  • Chiba, JP (1988 - 2004)

Company Filing History:

goldMedal4 out of 2,283 
 
Idemitsu Kosan Company, Limited
 patents
silverMedal1 out of 834,453 
Other
 patents

Years Active: 1988-2004

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5 patents (USPTO):Explore Patents
1. 6720048 - Pipe comprising ethylene base polymer (2004-04-13),
2. 5149581 - Polyether copolymers, resin compositions containing them, and molded (1992-09-22),
3. 5115077 - Polyetheric copolymers, process for preparing the same compositions (1992-05-19),
4. 4755584 - Polyester carbonate containing imido groups and method of preparing the (1988-07-05),
5. 4749775 - Novel polyester polymers (1988-06-07),

Title: Shigeru Murakami: Innovator in Polymer Technology

Introduction

Shigeru Murakami is a notable inventor based in Chiba, Japan. He has made significant contributions to the field of polymer technology, holding a total of 5 patents. His work focuses on developing advanced materials that exhibit exceptional durability and mechanical properties.

Latest Patents

One of his latest patents is for a pipe comprising an ethylene base polymer. This innovative pipe is designed to withstand high internal pressure and features a maximum residual stress of 0.13 MPa or less. The crystallinity of the material ranges from 0.630 to 0.850, with a thickness between 5 to 50 mm. This design ensures excellent durability, rigidity, and impact resistance, making it suitable for large diameter pipes. Another significant patent involves polyether copolymers, which are produced through a specific chemical reaction. These copolymers exhibit excellent heat resistance, solvent resistance, and mechanical strength, making them ideal for various applications, including resin compositions and heat-resistant laminates.

Career Highlights

Throughout his career, Shigeru Murakami has worked with Idemitsu Kosan Company, Limited, where he has contributed to various innovative projects. His expertise in polymer science has allowed him to develop materials that meet the demands of modern engineering applications.

Collaborations

Shigeru Murakami has collaborated with notable colleagues such as Shigeru Matsuo and Shinji Chino. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in the field of polymers.

Conclusion

Shigeru Murakami's contributions to polymer technology through his patents and collaborations highlight his role as a leading inventor in the industry. His innovative work continues to influence the development of advanced materials that meet the needs of various applications.

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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