logo

For the Inventor, By the Inventor

Nagoya, Japan

Toho Gas Co., Ltd.

Calculating rank
USPTO Granted Patents = 21

% Expired Patents = 14.3


Forward Citations = 219

Loading Chart...
Loading Chart...

69 inventors (with patents filed for the assignee):

goldMedal Kenji Ukai (6 out of 6 patents)

silverMedal Kouji Hisada (4 out of 4 patents)

bronzeMedal 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:

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),
Company Overview
Toho Gas Co., Ltd. is a prominent energy provider based in Nagoya, Japan, specializing in the production and distribution of natural gas. The company is committed to advancing energy solutions and enhancing customer services through innovative technologies. Toho Gas focuses on sustainable energy practices and is involved in various initiatives aimed at reducing environmental impact. Its research and development efforts encompass energy efficiency, smart energy systems, and the integration of renewable energy sources, positioning the company as a key player in the evolving energy landscape.
Profile summary synthesized from public USPTO records and patent filings.

logo

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

21 Patents

#47 in Nagoya

#2,868 in Japan

#30,018 in the World

Nagoya, JP
Nagoya, Japan

Toho Gas Co., Ltd.

Forward Citations = 219

69 inventors:

goldMedal Kenji Ukai (6 out of 6 patents)

silverMedal Kouji Hisada (4 out of 4 patents)

bronzeMedal Yasunobu Mizutani (3 out of 4 patents)

4.  Norikazu Aikawa (2 out of 17 patents)

5.  Kohei Nakamura (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Toho Gas Co., Ltd.. Retrieved from https://idiyas.com/company/toho-gas-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]
Loading…