Hiroyuki Hirai

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Nara City, JP

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Patents Grantslast 30 patents

Information Patent Grant
Network telephone set and audio decoding device
- Patent number 7,505,912
- Issue date Mar 17, 2009
- Sanyo Electric Co., LTD
- Kozo Okuda
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
Network telephone set and audio decoding device
- Publication number 20040204945
- Publication date Oct 14, 2004
- Kozo Okuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE