Tetsuo Hirabayashi

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Battery pack removing device
- Patent number 6,490,436
- Issue date Dec 3, 2002
- Matsushita Electronic Industrial Co., Ltd.
- Ryoichi Kaiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Resiliently deformable battery pack
- Patent number 6,451,474
- Issue date Sep 17, 2002
- Matsushita Electric Industrial Co., Ltd.
- Katsumi Kozu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Interconnection structure between portable telephone and battery pack
- Patent number 6,204,631
- Issue date Mar 20, 2001
- Matsushita Electric Industrial Co., Ltd.
- Ryoichi Kaiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Battery pack with water leakage detecting seal
- Patent number 6,137,259
- Issue date Oct 24, 2000
- Matsushita Electric Industrial Co., Ltd.
- Tetsuo Hirabayashi
- H01 - BASIC ELECTRIC ELEMENTS