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Teijin Limited

USPTO Granted Patents = 1,586

CIPO Patents = 123

EPO Patents = 339

Trademarks = 22

Forward Citations = 18,005

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2,199 inventors (with patents filed for the assignee):

Yataro Ichikawa (46 out of 46 patents)

Satoshi Nishikawa (43 out of 58 patents)

Shunichi Matsumura (42 out of 44 patents)

4. Hiroo Inata (40 out of 43 patents)

5. Seizi Kurozumi (34 out of 35 patents)

6. Yoshiki Suzuki (33 out of 37 patents)

7. Katsushi Sasaki (32 out of 34 patents)

8. Keizo Shimada (28 out of 29 patents)

9. Hiroaki Kaneko (26 out of 41 patents)

10. Takashi Yoshitomi (26 out of 26 patents)

11. Toru Sawaki (26 out of 29 patents)

12. Yuji Makino (26 out of 28 patents)

13. Toshio Tanaka (25 out of 44 patents)

14. Kinji Hasegawa (24 out of 24 patents)

15. Wataru Funakoshi (23 out of 23 patents)

Core Competencies:

Carbon Fiber

Composite Materials

Non-Aqueous Secondary Battery

Optical Lens

Thermoplastic Resin

Prepreg Manufacturing

Molded Articles

Infrared Ray-Blocking

Resin Composition

Conductive Films

Ultrasonic Inspection

Medical Packaging

1,586 patents: Sort by Forward Citations

1. 12455264 - Non-transitory computer readable medium storing program for inspecting molded article region, method for inspecting molded article region, and device for inspecting molded article region (2025-10-28),

2. 12441880 - Poly(ester)carbonate and method for producing poly(ester)carbonate (2025-10-14),

3. 12441853 - Prepreg and carbon fiber-reinforced composite material (2025-10-14),

4. 12435451 - Method for manufacturing precursor fiber bundle, method for manufacturing carbon fiber bundle, and carbon fiber bundle (2025-10-07),

5. 12428778 - Carbon fiber bundle with adhered sizing agent (2025-09-30),

6. 12409719 - Battery tray made of integrally molded fiber reinforced plastics (2025-09-09),

7. 12407066 - Separator for non-aqueous secondary battery and non-aqueous secondary battery (2025-09-02),

8. 12401094 - Separator for non-aqueous secondary battery and non-aqueous secondary battery (2025-08-26),

9. 12378373 - Composite material and production method therefor (2025-08-05),

10. 12359019 - Prepreg, method for producing same, and method for producing fiber-reinforced composite material (2025-07-15),

11. 12351697 - Resin composition for infrared ray-blocking transparent member, and molded article (2025-07-08),

12. 12334560 - Fibrous-carbon-containing active material layer for all-solid lithium secondary battery and all-solid lithium secondary battery (2025-06-17),

13. 12304162 - Method for producing press-molded body (2025-05-20),

14. 12294113 - Separator for non-aqueous secondary battery and non-aqueous secondary battery (2025-05-06),

15. 12288898 - Separator for non-aqueous secondary battery and non-aqueous secondary battery (2025-04-29),

Teijin Limited is a global technology-driven pharmaceutical and materials company. They aim to enhance the quality of life and contribute to a sustainable society through their business activities. With a diverse range of products and services, Teijin operates in various sectors such as healthcare, fibers & products converting, films & sheets, resin & plastic processing, and IT software solutions.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

1,586 Patents

#20 in Osaka

#143 in Japan

#615 in the World

Teijin Limited

Forward Citations = 18,005

2,199 inventors:

Yataro Ichikawa (46 out of 46 patents)

Satoshi Nishikawa (43 out of 58 patents)

Shunichi Matsumura (42 out of 44 patents)

4. Hiroo Inata (40 out of 43 patents)

5. Seizi Kurozumi (34 out of 35 patents)

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