Keiichi Sugiyama

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Audio signal outputting method, audio signal reproduction method, a...
- Patent number 6,828,498
- Issue date Dec 7, 2004
- Kabushiki Kaisha Sega
- Keiichi Sugiyama
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Piano sound pickup method and device
- Patent number 4,151,777
- Issue date May 1, 1979
- Keiichi Sugiyama
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
MOBILE DEVICE, AND SECURITY LOCK CONTROL METHOD AND PROGRAM THEREOF
- Publication number 20120196573
- Publication date Aug 2, 2012
- NEC Corporation
- Keiichi Sugiyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Audio signal outputting method, audio signal reproduction method, a...
- Publication number 20030070538
- Publication date Apr 17, 2003
- Keiichi Sugiyama
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Information processing apparatus, method for utilizing the same and...
- Publication number 20020095437
- Publication date Jul 18, 2002
- Keiichi Sugiyama
- G06 - COMPUTING CALCULATING COUNTING