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Polymatech Co., Ltd.

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USPTO Granted Patents = 117

% Expired Patents = 66.7

EPO Patents = 18

Trademarks = 1

Forward Citations = 1,334

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82 inventors (with patents filed for the assignee):

Masayuki Tobita (15 out of 16 patents)

Hideaki Konno (9 out of 9 patents)

Naoyuki Shimoyama (9 out of 9 patents)

4. Shinya Tateda (9 out of 9 patents)

5. Toru Kimura (7 out of 52 patents)

6. Yoshifumi Honmatsu (6 out of 6 patents)

7. Motoki Ozawa (5 out of 5 patents)

8. Masayuki Itakura (5 out of 5 patents)

9. Tsunehisa Kimura (5 out of 8 patents)

10. Masaya Katori (5 out of 5 patents)

11. Masayuki Kashino (5 out of 6 patents)

12. Takeshi B Nishimura (5 out of 43 patents)

13. Yutaka Nakanishi (4 out of 23 patents)

14. Yasunori Takeda (4 out of 4 patents)

15. Tedi Kunthady (4 out of 4 patents)

Core Competencies:

Thermal Conductive Sheet

Anisotropic Conductor

Key Sheet

Pushbutton Switch

Decorative Molded Body

Connector

Damper

Polymer Electrolyte Membrane

Input Device

Vibration Proof Structure

Manufacturing Method

Graphite Sheet

117 patents: Sort by Forward Citations

1. 8872038 - Anisotropic conductor, method of producing the same, and anisotropic conductor-arranged sheet (2014-10-28),

2. 8854313 - Sensor-integrated illuminated key sheet (2014-10-07),

3. 8827528 - Key sheet, lightproof light guiding sheet, pushbutton switch, and method of manufacturing key sheet (2014-09-09),

4. 8820949 - Key sheet, light blocking effect sheet, push button switch and key sheet manufacturing method (2014-09-02),

5. 8691368 - Thermally conductive sheet and method of manufacturing the same (2014-04-08),

6. 8479899 - Damper, and electronic component and electronic apparatus equipped with the damper (2013-07-09),

7. 8439690 - Connector (2013-05-14),

8. 8419448 - Elastic connector, method of manufacturing elastic connector, and electric connection tool (2013-04-16),

9. 8377557 - Thermally conductive sheet composite and method for manufacturing the same (2013-02-19),

10. 8287975 - Laminated body (2012-10-16),

11. 8221883 - Graphite sheet and manufacturing method of the same (2012-07-17),

12. 8137806 - Thermal diffusion sheet and method for positioning thermal diffusion sheet (2012-03-20),

13. 8106320 - Decorative sheet, decorative molded body, decorative key sheet, and decorative sheet manufacturing method (2012-01-31),

14. 8072425 - Key sheet for a pointing device and pointing device (2011-12-06),

15. 8013262 - Key sheet (2011-09-06),

Company Overview

Polymatech Co., Ltd., based in Tokyo, specializes in the development and manufacturing of advanced thermal conductive sheets and related materials. The company focuses on innovative solutions in thermal management, particularly through anisotropic conductors and polymer electrolyte membranes. Their product range also includes key sheets, pushbutton switches, decorative molded bodies, connectors, and dampers, catering to various industries that require efficient thermal performance and reliability in electronic applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

117 Patents

#503 in Tokyo

#1,031 in Japan

#6,806 in the World

Polymatech Co., Ltd.

Forward Citations = 1,334

82 inventors:

Masayuki Tobita (15 out of 16 patents)

Hideaki Konno (9 out of 9 patents)

Naoyuki Shimoyama (9 out of 9 patents)

4. Shinya Tateda (9 out of 9 patents)

5. Toru Kimura (7 out of 52 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Polymatech Co., Ltd.. Retrieved from https://idiyas.com/company/polymatech-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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