Nobuhisa Atoji

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Toyonaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sealed headphone
- Patent number 4,239,945
- Issue date Dec 16, 1980
- Matsushita Electric Industrial Co., Ltd.
- Nobuhisa Atoji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Headphone with two resonant peaks for simulating loudspeaker reprod...
- Patent number 4,211,898
- Issue date Jul 8, 1980
- Matsushita Electric Industrial Co., Ltd.
- Nobuhisa Atoji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Microphone capable of cancelling mechanical generated noise
- Patent number 4,127,749
- Issue date Nov 28, 1978
- Matsushita Electric Industrial Co., Ltd.
- Nobuhisa Atoji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE