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Toho Gas Co., Ltd.

USPTO Granted Patents = 21

EPO Patents = 3

Forward Citations = 212

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73 inventors (with patents filed for the assignee):

Kenji Ukai (6 out of 6 patents)

Kouji Hisada (4 out of 4 patents)

Yasunobu Mizutani (3 out of 4 patents)

4. Norikazu Aikawa (2 out of 17 patents)

5. Kohei Nakamura (2 out of 2 patents)

6. Takashi Ina (2 out of 3 patents)

7. Kazuo Hata (2 out of 22 patents)

8. Masaji Kurosawa (2 out of 15 patents)

9. Masatoshi Shimomura (2 out of 7 patents)

10. Mitsuo Tsuchiya (2 out of 2 patents)

11. Masafumi Matsubara (2 out of 2 patents)

12. Nobutaka Kanamori (2 out of 3 patents)

13. Yoshiharu Sago (2 out of 2 patents)

14. Hiroyuki Toya (1 out of 40 patents)

15. Hiroshi Machida (1 out of 5 patents)

21 patents: Sort by Forward Citations

1. 12364950 - Carbon dioxide recovery device (2025-07-22),

2. 11306237 - Latent-heat storage material composition and latent-heat storage tank (2022-04-19),

3. 11149179 - Latent heat storage material composition (2021-10-19),

4. 7608357 - Fuel electrode material, a fuel electrode, and a solid oxide fuel cell (2009-10-27),

5. 7422822 - Single cell for a solid oxide fuel cell (2008-09-09),

6. 7235325 - Single cell for a solid oxide fuel cell (2007-06-26),

7. 7108938 - Single cell for a solid oxide fuel cell (2006-09-19),

8. 6835485 - Solid oxide fuel cell having a supported electrolyte film (2004-12-28),

9. 6787261 - Solid oxide fuel cell (2004-09-07),

10. 6532421 - Method for estimating a life of apparatus under narrow-band random stress variation (2003-03-11),

11. 6149346 - Method for replacement of existing pipes and device for carrying out the (2000-11-21),

12. 5848372 - Apparatus for detecting trouble states in engine (1998-12-08),

13. 5846059 - Scotch yoke mechanism for multistage compressor having a spring-biased (1998-12-08),

14. 5623203 - Remote field flaw sensor including an energizing coil, first and second (1997-04-22),

15. 5221586 - Power generation system using fuel cells (1993-06-22),

Toho Gas Co., Ltd. is a Japanese energy company that provides natural gas to residential, commercial, and industrial customers in the Chubu region. The company focuses on sustainability and innovation to contribute to a low-carbon society. With a history dating back to 1955, Toho Gas is committed to delivering safe and reliable energy solutions to its customers.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

21 Patents

#39 in Nagoya

#2,798 in Japan

#29,031 in the World

Toho Gas Co., Ltd.

Forward Citations = 212

73 inventors:

Kenji Ukai (6 out of 6 patents)

Kouji Hisada (4 out of 4 patents)

Yasunobu Mizutani (3 out of 4 patents)

4. Norikazu Aikawa (2 out of 17 patents)

5. Kohei Nakamura (2 out of 2 patents)

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