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Teijin Chemicals Limited

USPTO Granted Patents = 127

% Expired Patents = 25.2

CIPO Patents = 3

EPO Patents = 30

Trademarks = 2

Forward Citations = 753

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192 inventors (with patents filed for the assignee):

Toshimasa Tokuda (13 out of 14 patents)

Katsuhiro Yamanaka (6 out of 26 patents)

Seiichi Tanabe (6 out of 13 patents)

4. Osamu Ohara (6 out of 6 patents)

5. Masatoshi Ando (5 out of 10 patents)

6. Makoto Takagi (5 out of 10 patents)

7. Tatsuya Ekinaka (5 out of 11 patents)

8. Takehiro Suga (5 out of 9 patents)

9. Tetsuya Motoyoshi (5 out of 11 patents)

10. Toshiaki Hotaka (5 out of 7 patents)

11. Tomomitsu Onizawa (5 out of 5 patents)

12. Yutaka Taketani (5 out of 5 patents)

13. Masaki Nishiguchi (4 out of 26 patents)

14. Toshio Kita (4 out of 9 patents)

15. Koki Ikeda (4 out of 4 patents)

Core Competencies:

Optical Film

Polycarbonate Resin

Flame Retardant

Touch Panel

Resin Composition

Molded Article

Curved Member

Spectacle Lens

Acrylic Resin

Optical Disk

Decorative Molding

Composite Material

127 patents: Sort by Forward Citations

1. 10061461 - Transparent electroconductive laminate and transparent touch panel using the same (2018-08-28),

2. 10042481 - Transparent electroconductive laminate and transparent touch panel (2018-08-07),

3. 9652059 - Transparent electroconductive laminate and transparent touch panel (2017-05-16),

4. 9598546 - Optical film (2017-03-21),

5. 9296143 - Process of manufacturing a curved member having a high-grade design surface and member manufactured by the process (2016-03-29),

6. 9189112 - Touch panel device and display device with touch panel device (2015-11-17),

7. 8969436 - Method of producing a molded article (2015-03-03),

8. 8962780 - Polycarbonate-polydiorganosiloxane copolymer (2015-02-24),

9. 8945704 - Multi-layer film, decorative molding film and molded body (2015-02-03),

10. 8877304 - Optical film (2014-11-04),

11. 8859655 - Flame retardant resin composition and molded article thereof (2014-10-14),

12. 8859099 - Laminate of an acrylic resin composition layer containing triazine based ultra-violet compounds and an organosiloxane resin composition layer (2014-10-14),

13. 8846180 - Retardation film (2014-09-30),

14. 8765891 - Laminate of an acrylic resin composition layer containing triazine based ultra-violet compounds and an organosiloxane resin composition layer (2014-07-01),

15. 8697796 - Slidable resin composition and molded article thereof (2014-04-15),

Company Overview

Teijin Chemicals Limited, headquartered in Tokyo, specializes in the development and manufacturing of advanced optical materials. The company focuses on a range of core technologies including optical films, polycarbonate resins, and flame retardants, which are integral to various applications such as touch panels and molded articles. Teijin's expertise extends to producing innovative solutions for curved members and spectacle lenses, positioning it as a key player in the optical materials sector within the global market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

127 Patents

#479 in Tokyo

#975 in Japan

#6,327 in the World

Teijin Chemicals Limited

Forward Citations = 753

192 inventors:

Toshimasa Tokuda (13 out of 14 patents)

Katsuhiro Yamanaka (6 out of 26 patents)

Seiichi Tanabe (6 out of 13 patents)

4. Osamu Ohara (6 out of 6 patents)

5. Masatoshi Ando (5 out of 10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Teijin Chemicals Limited. Retrieved from https://idiyas.com/company/teijin-chemicals

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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