Nobuyuki Yamaguchi

Follow

Person

Saitama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Voice packet communications system with communications quality eval...
- Patent number 7,924,824
- Issue date Apr 12, 2011
- Oki Electric Industry Co., Ltd.
- Hiromi Aoyagi
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Voice packet communications system with communications quality eval...
- Patent number 7,489,678
- Issue date Feb 10, 2009
- Oki Electric Industry Co., Ltd.
- Hiromi Aoyagi
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Quality control device for voice packet communications
- Patent number 7,123,607
- Issue date Oct 17, 2006
- Oki Electric Industry Co., Ltd.
- Atsushi Yokoyama
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Voice packet communications system with communications quality eval...
- Patent number 6,885,659
- Issue date Apr 26, 2005
- Oki Electric Industry Co., Ltd.
- Hiromi Aoyagi
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Circuitry for and a method of detecting tonal signals with the proc...
- Patent number 6,826,496
- Issue date Nov 30, 2004
- Oki Electric Industry Co., Ltd.
- Nobuyuki Yamaguchi
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

Information Patent Application
VOICE PACKET COMMUNICATIONS SYSTEM WITH COMMUNICATIONS QUALITY EVAL...
- Publication number 20090213727
- Publication date Aug 27, 2009
- OKI ELECTRIC INDUSTRY., LTD.
- Hiromi Aoyagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Voice packet communications system with communications quality eval...
- Publication number 20050129006
- Publication date Jun 16, 2005
- Oki Electric Industry Co., Ltd.
- Hiromi Aoyagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Circuitry for and a method of detecting tonal signals with the proc...
- Publication number 20020147556
- Publication date Oct 10, 2002
- Nobuyuki Yamaguchi
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Voice packet communications system with communications quality eval...
- Publication number 20020064186
- Publication date May 30, 2002
- Hiromi Aoyagi
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
Quality control device for voice packet communications
- Publication number 20020064158
- Publication date May 30, 2002
- Atsushi Yokoyama
- G10 - MUSICAL INSTRUMENTS ACOUSTICS