Naohisa Watahiki

Follow

Person

Mito, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Sodium-sulphur cell, method of operating same and method of load le...
- Patent number 4,937,155
- Issue date Jun 26, 1990
- Hitachi, Ltd.
- Hiromi Tokoi
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Solar heat collector
- Patent number 4,440,151
- Issue date Apr 3, 1984
- Hitachi, Ltd.
- Takanobu Yamamoto
- F24 - HEATING RANGES VENTILATING