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Nippon Carbon Co., Ltd.

USPTO Granted Patents = 41

EPO Patents = 3

Trademarks = 1

Forward Citations = 369

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70 inventors (with patents filed for the assignee):

Hiroshi Ichikawa (16 out of 40 patents)

Toshikatsu Ishikawa (11 out of 15 patents)

Haruo Teranishi (8 out of 10 patents)

4. Takanobu Kawai (6 out of 6 patents)

5. Hiroshi Yamazoe (6 out of 6 patents)

6. Akira Yokoyama (5 out of 7 patents)

7. Ken-ichi Hongawa (4 out of 4 patents)

8. Hayato Matsumoto (4 out of 4 patents)

9. Kazuaki Yamashita (4 out of 4 patents)

10. Yoshikazu Imai (4 out of 8 patents)

11. Kiyohito Okamura (3 out of 35 patents)

12. Tokuji Hayase (3 out of 3 patents)

13. Katsuo Komiya (2 out of 15 patents)

14. Mitsuhiko Sato (2 out of 13 patents)

15. Shiro Mitsuno (2 out of 5 patents)

Core Competencies:

Lithium Ion Batteries

Silicon Carbide Fibers

Graphite Crucibles

Gas Chromatography

Carbon Fiber Manufacturing

Electromagnetic Wave Absorbers

Inorganic Composite Bodies

Flexible Graphite Materials

Ceramic Fibers

Negative Electrode Materials

Composite Materials

Graphite-Clad Nuclear Fuel

41 patents: Sort by Forward Citations

1. 11276858 - Negative electrode active material for lithium ion rechargeable battery and negative electrode using the same (2022-03-15),

2. 11002369 - High sealing property ball valve seat (2021-05-11),

3. 10283775 - Negative electrode active material for lithum ion rechargeable battery and negative electrode using the same (2019-05-07),

4. 10102980 - Negative-electrode active material for lithium ion capacitor (2018-10-16),

5. 9490499 - Negative electrode active material for lithium ion rechargeable battery and negative electrode using the same (2016-11-08),

6. 8728668 - Negative electrode active material for lithium ion rechargeable battery and negative electrode using the same (2014-05-20),

7. 6184507 - Package for carbon heater used for manufacturing a mono crystal body and method of forming the same (2001-02-06),

8. 5966794 - Method of manufacturing multiple-piece graphite crucible (1999-10-19),

9. 5824281 - Process for producing silicon carbide fibers (1998-10-20),

10. 5795539 - Method for cooling graphite electrodes used for metal melting and (1998-08-18),

11. 5447624 - Packings for liquid chromatography and process for producing the same (1995-09-05),

12. 5344709 - Silicon carbide fiber and method of manufacturing the same (1994-09-06),

13. 5283044 - Super heat-resistant silicon carbide fibers from poly-carbosilane (1994-02-01),

14. 5272126 - Adsorption type packing for gas chromatography and process for producing (1993-12-21),

15. 5270280 - Packing material for liquid chromatography and method of manufacturing (1993-12-14),

Nippon Carbon Co., Ltd. is a leading manufacturer of carbon products based in Japan. With over 100 years of expertise, Nippon Carbon specializes in the production of artificial graphite electrodes, carbon fibers, and other carbon-based materials. Serving various industries such as the steel, semiconductor, and automotive sectors, the company is committed to providing high-quality, innovative carbon solutions that contribute to sustainable development.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

41 Patents

#792 in Tokyo

#1,897 in Japan

#16,213 in the World

Nippon Carbon Co., Ltd.

Forward Citations = 369

70 inventors:

Hiroshi Ichikawa (16 out of 40 patents)

Toshikatsu Ishikawa (11 out of 15 patents)

Haruo Teranishi (8 out of 10 patents)

4. Takanobu Kawai (6 out of 6 patents)

5. Hiroshi Yamazoe (6 out of 6 patents)

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