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Showa Highpolymer Co., Ltd.

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USPTO Granted Patents = 68

% Expired Patents = 8.8

Trademarks = 2

Forward Citations = 758

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106 inventors (with patents filed for the assignee):

Eiichiro Takiyama (38 out of 39 patents)

Toshiaki Hanyuda (11 out of 12 patents)

Juichi Kasai (10 out of 18 patents)

4. Ryosuke Kamei (8 out of 18 patents)

5. Akira Nakamura (5 out of 18 patents)

6. Tetuya Takahashi (5 out of 5 patents)

7. Mitsuhiro Imaizumi (5 out of 8 patents)

8. Takashi Fujimaki (4 out of 8 patents)

9. Toshiaki Sugimoto (4 out of 7 patents)

10. Takao Hokari (4 out of 4 patents)

11. Shigenori Terazono (4 out of 4 patents)

12. Takeshi Takahashi (4 out of 4 patents)

13. Yukio Doi (4 out of 4 patents)

14. Yuichiro Yasukawa (3 out of 7 patents)

15. Toshio Taka (3 out of 13 patents)

Core Competencies:

Curable Resin

Polyester Resin

Biodegradable Polyester

Thermosetting Resin

Photosensitive Resin

Plastic Fastener

Polyester Film

Acrylic Rubber

Plastic Zipper

Carbon Fiber Composite

Nonwoven Polyester

Polymer Emulsion

68 patents: Sort by Forward Citations

1. 7723445 - Curable resin composition, molded product, and process for producing the same (2010-05-25),

2. 7585558 - Carbon fiber-reinforced resin composite materials (2009-09-08),

3. 7514379 - Curable polyvinyl benzyl compound and process for producing the same (2009-04-07),

4. 7171730 - Plastic chuck with highly airtight slider and bag body with the chuck (2007-02-06),

5. 7165292 - Plastic chuck with wrong opening preventing slider, and bag with the chuck (2007-01-23),

6. 7004631 - Portable laundry bag (2006-02-28),

7. 6915546 - Plastic fastener with slider and bag body with plastic fastener (2005-07-12),

8. 6899461 - Slider of plastic chuck, bag body with slider, and method of manufacturing the bag body (2005-05-31),

9. 6818729 - Thermosetting resin and method for producing the same (2004-11-16),

10. 6789947 - Plastic fastener with slider and bag body provided with the plastic fastener and method of producing the bag body (2004-09-14),

11. 6727042 - Photosensitive resin composition (2004-04-27),

12. 6716911 - Method for producing aqueous biodegradable polyester dispersion (2004-04-06),

13. 6539594 - Plastic zipper improved in durability (2003-04-01),

14. 6244748 - Plastic package with fastener (2001-06-12),

15. 5837755 - Biodegradable thermosetting urea-resin compositions (1998-11-17),

Company Overview

Showa Highpolymer Co., Ltd., based in Tokyo, specializes in the development and manufacturing of advanced curable resin compositions. The company focuses on a diverse range of technologies, including polyester resins, biodegradable materials, and thermosetting resins. Their innovative products cater to various applications, such as plastic fasteners and polyester films, emphasizing sustainability and performance. Showa Highpolymer is committed to advancing materials science, contributing to industries that require high-quality, durable, and environmentally friendly solutions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

68 Patents

#681 in Tokyo

#1,430 in Japan

#10,895 in the World

Showa Highpolymer Co., Ltd.

Forward Citations = 758

106 inventors:

Eiichiro Takiyama (38 out of 39 patents)

Toshiaki Hanyuda (11 out of 12 patents)

Juichi Kasai (10 out of 18 patents)

4. Ryosuke Kamei (8 out of 18 patents)

5. Akira Nakamura (5 out of 18 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Showa Highpolymer Co., Ltd.. Retrieved from https://idiyas.com/company/showa-highpolymer-company

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

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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