Masashi Hara

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Speaker diaphragm, speaker, and production method of speaker diaphragm
- Patent number 9,027,699
- Issue date May 12, 2015
- Mitsubishi Electric Corporation
- Tetsuo Mitani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SPEAKER DIAPHRAGM, SPEAKER, AND PRODUCTION METHOD OF SPEAKER DIAPHRAGM
- Publication number 20110284317
- Publication date Nov 24, 2011
- MITSUBISHI ELECTRIC CORPORATION
- Tetsuo Mitani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE