Hiroki SANO

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Speaker diaphragm, speaker, speaker diaphragm manufacturing method,...
- Patent number 11,582,557
- Issue date Feb 14, 2023
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Tetsuya Koyanagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
DIAPHRAGM, LOUDSPEAKER, AND DIAPHRAGM MANUFACTURING METHOD
- Publication number 20250133345
- Publication date Apr 24, 2025
- Panasonic Automotive Systems Co., Ltd.
- Tetsushi ITANO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SPEAKER DIAPHRAGM, SPEAKER, SPEAKER DIAPHRAGM MANUFACTURING METHOD,...
- Publication number 20210306755
- Publication date Sep 30, 2021
- Panasonic Intellectual Property Management Co., Ltd.
- Tetsuya KOYANAGI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE