Akira Usui

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Hamamatsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Audio playback method and apparatus using line array speaker unit
- Patent number 8,345,883
- Issue date Jan 1, 2013
- Yamaha Corporation
- Susumu Takumai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Audio characteristic correction system
- Patent number 7,580,530
- Issue date Aug 25, 2009
- Yamaha Corporation
- Yusuke Konagai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Integrated circuit device having internal fast clock source
- Patent number 5,598,447
- Issue date Jan 28, 1997
- Yamaha Corporation
- Akira Usui
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digital filter capable of sample rate alteration
- Patent number 5,101,369
- Issue date Mar 31, 1992
- Yamaha Corporation
- Junji Torii
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digital filter
- Patent number 4,866,648
- Issue date Sep 12, 1989
- Yamaha Corporation
- Akira Usui
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Displacement detector for an encoder
- Patent number 4,811,254
- Issue date Mar 7, 1989
- Nippon Gakki Seizo Kabushiki Kaisha
- Kenzaburou Iijima
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Data transmission system
- Patent number 4,694,293
- Issue date Sep 15, 1987
- Nippon Gakki Seizo Kabushiki Kaisha
- Jun Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Audio characteristic correction system
- Publication number 20070036366
- Publication date Feb 15, 2007
- Yamaha Corporation
- Yusuke Konagai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Array speaker system
- Publication number 20070019831
- Publication date Jan 25, 2007
- Yamaha Corporation
- Akira Usui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Array speaker system
- Publication number 20060256979
- Publication date Nov 16, 2006
- Yamaha Corporation
- Akira Usui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Audio playback method and apparatus using line array speaker unit
- Publication number 20060126878
- Publication date Jun 15, 2006
- Yamaha Corporation
- Susumu Takumai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE