For the Inventor, By the Inventor

Enter assignee name

Tokyo Gas Kabushiki Kaisha

USPTO Granted Patents = 9

Forward Citations = 193

Loading Chart...

Loading Chart...

26 inventors (with patents filed for the assignee):

Akio Morinaga (6 out of 13 patents)

Hitoshi Saito (4 out of 21 patents)

Masahiro Seshimo (3 out of 5 patents)

4. Shigeo Kaneda (2 out of 2 patents)

5. Katsuaki Zenbayashi (2 out of 3 patents)

6. Masakatsu Hyodo (2 out of 11 patents)

7. Masatoshi Ishikawa (1 out of 4 patents)

8. Tomiyo Nishimoto (1 out of 1 patent)

9. Hiroyuki Sakuragi (1 out of 2 patents)

10. Shinji Onishi (1 out of 1 patent)

11. Takashi Ueki (1 out of 6 patents)

12. Shinji Shimokawa (1 out of 2 patents)

13. Shigeru Toyoda (1 out of 16 patents)

14. Kiyoshi Uegaki (1 out of 1 patent)

15. Sofumi Sato (1 out of 1 patent)

9 patents: Sort by Forward Citations

1. 5857494 - Pipeline structure with a lining material, an end structure of said (1999-01-12),

2. 5164237 - Lining material for pipelines (1992-11-17),

3. 5077107 - Lining material for pipelines (1991-12-31),

4. 4956038 - Method for lining pipe lines (1990-09-11),

5. 4882470 - Boring device for opening passages to branch portions of a lined main (1989-11-21),

6. 4877665 - Lining material for pipe lines (1989-10-31),

7. 4638789 - Safety apparatus for combustion device (1987-01-27),

8. 4334943 - Method for smoothly evaginating a tubular material under pressure (1982-06-15),

9. 3977140 - Earthquake resistant structure for spherical tanks (1976-08-31),

Tokyo Gas Kabushiki Kaisha is a Japanese natural gas utility company headquartered in Tokyo, Japan. It is one of the largest gas utilities in Japan and provides natural gas to residential, commercial, and industrial customers. The company also provides energy-related services, such as gas appliance installation and maintenance, as well as energy consulting services.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

9 Patents

#1,787 in Tokyo

#4,573 in Japan

Tokyo Gas Kabushiki Kaisha

Forward Citations = 193

26 inventors:

Akio Morinaga (6 out of 13 patents)

Hitoshi Saito (4 out of 21 patents)

Masahiro Seshimo (3 out of 5 patents)

4. Shigeo Kaneda (2 out of 2 patents)

5. Katsuaki Zenbayashi (2 out of 3 patents)

Please report any incorrect information to support@idiyas.com

Loading…