Yasushi Katsumata

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Data distributing apparatus and terminal apparatus for data distrib...
- Patent number 7,243,241
- Issue date Jul 10, 2007
- Sony Corporation
- Yasushi Katsumata
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Microphone apparatus
- Patent number 5,243,661
- Issue date Sep 7, 1993
- Sony Corporation
- Masashi Ohkubo
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Active equalizer
- Patent number 4,438,409
- Issue date Mar 20, 1984
- Sony Corporation
- Yasushi Katsumata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE