Ryo Kumagai

Follow

Person

Shizuoka-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Battery residual capacity measuring system and battery residual cap...
- Patent number 5,963,016
- Issue date Oct 5, 1999
- Yazaki Corporation
- Yoichi Arai
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Battery remaining capacity measuring device
- Patent number 5,703,486
- Issue date Dec 30, 1997
- Yazaki Corporation
- Youichi Arai
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for measuring and displaying remaining battery...
- Patent number 5,698,983
- Issue date Dec 16, 1997
- Yazaki Corporation
- Youichi Arai
- G01 - MEASURING TESTING