Growing community of inventors

Hachioji, Japan

Toru Yamakawa

Average Co-Inventor Count = 1.41

ph-index = 7

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 111

Toru YamakawaFujio Makita (5 patents)Toru YamakawaMitsuo Umezawa (5 patents)Toru YamakawaRyuzo Sakakiyama (4 patents)Toru YamakawaRyuzo Sakikiyama (1 patent)Toru YamakawaToru Yamakawa (13 patents)Fujio MakitaFujio Makita (13 patents)Mitsuo UmezawaMitsuo Umezawa (11 patents)Ryuzo SakakiyamaRyuzo Sakakiyama (53 patents)Ryuzo SakikiyamaRyuzo Sakikiyama (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Fuji Jukogyo Kabushiki Kaisha (13 from 2,208 patents)


13 patents:

1. 4840246 - Power transmission control system for a four-wheel drive vehicle

2. 4662490 - Clutch system for an internal combustion engine provided with a

3. 4630704 - System for controlling a power transmission of a four-wheel drive vehicle

4. 4617840 - System for controlling a power transmission of a four-wheel drive vehicle

5. 4586583 - System for controlling a power transmission of a four-wheel drive vehicle

6. 4576061 - System for controlling the transmission of a four-wheel drive vehicle

7. 4560021 - Control system for a plurality of engine units

8. 4512301 - Internal combustion engine provided with a plurality of power units

9. 4493190 - Cooling system for an engine having a plurality of engine units

10. 4480612 - Internal combustion engine provided with a plurality of power units

11. 4442805 - Internal combustion engine provided with a plurality of power units

12. 4439989 - Internal combustion engine provided with a plurality of power units

13. 4430862 - Internal combustion engine for vehicles

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
12/21/2025
Loading…