Akiyoshi Sakai

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Sumoto, JP

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Patents Grantslast 30 patents

Information Patent Grant
Packed battery and method of making the same
- Patent number 4,997,731
- Issue date Mar 5, 1991
- Sanyo Electric Co., Ltd.
- Toyoji Machida
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Sealed type battery provided with safety valve means and method of...
- Patent number 4,783,383
- Issue date Nov 8, 1988
- Sanyo Electric Co., Ltd.
- Toyoji Machida
- H01 - BASIC ELECTRIC ELEMENTS