Koichi SHUTA

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Sendai-shi, JP

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Patents Applicationslast 30 patents

Information Patent Application
PIEZOELECTRIC SPEAKER
- Publication number 20180041839
- Publication date Feb 8, 2018
- TOKIN CORPORATION
- Yoshiyuki ABE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VIBRATION TRANSFER STRUCTURE AND PIEZOELECTRIC SPEAKER
- Publication number 20180035200
- Publication date Feb 1, 2018
- TOKIN CORPORATION
- Yoshiyuki ABE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SOUND GENERATING UNIT AND ELECTRONIC DEVICE
- Publication number 20170257706
- Publication date Sep 7, 2017
- TOKIN CORPORATION
- Osamu YAMAZAKI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE