Yasukazu Tokuhisa

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Gunma, JP

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Patents Grantslast 30 patents

Information Patent Grant
Piezoelectric speaker and electroacoustic transducer
- Patent number 9,973,857
- Issue date May 15, 2018
- Taiyo Yuden Co., Ltd.
- Yasukazu Tokuhisa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Piezoelectric sounding body and electronic device using the same
- Patent number 7,447,324
- Issue date Nov 4, 2008
- Taiyo Yuden Co., Ltd.
- Tatsuyuki Ogawa
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
PIEZOELECTRIC SPEAKER AND ELECTROACOUSTIC TRANSDUCER
- Publication number 20160183006
- Publication date Jun 23, 2016
- Taiyo Yuden Co., Ltd.
- Yasukazu TOKUHISA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PIEZOELECTRIC ELECTROACOUSTIC TRANSDUCER
- Publication number 20080130921
- Publication date Jun 5, 2008
- Taiyo Yuden Co., Ltd.
- Yasukazu Tokuhisa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Piezoelectric sounding body and electronic device using same
- Publication number 20060221770
- Publication date Oct 5, 2006
- Tatsuyuki Ogawa
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information Patent Application
Piezoelectric sounding body and electronic device
- Publication number 20060158064
- Publication date Jul 20, 2006
- Kazuo Asakawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE