Masato Yamagata

Person

Shinagawa-ku, Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Telephone answering unit with caller ID and variable ring sounds
- Patent number 6,542,603
- Issue date Apr 1, 2003
- Sony Corporation
- Masato Yamagata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for allocating channels in plural communicatio...
- Patent number 6,002,939
- Issue date Dec 14, 1999
- Sony Corporation
- Masato Yamagata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cordless telephone with division of channels into groups of channels
- Patent number 5,926,766
- Issue date Jul 20, 1999
- Sony Corporation
- Masato Yamagata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cordless telephone apparatus having a low power stand-by mode and a...
- Patent number 5,363,430
- Issue date Nov 8, 1994
- Sony Corporation
- Masato Yamagata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cordless telephone which intermittently monitors predetermined chan...
- Patent number 5,237,603
- Issue date Aug 17, 1993
- Sony Corporation
- Masato Yamagata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cordless telephone with actuation of off-hook condition by operatio...
- Patent number 5,233,644
- Issue date Aug 3, 1993
- Sony Corporation
- Masato Yamagata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cordless telephone system having a telephone answering machine func...
- Patent number 5,220,594
- Issue date Jun 15, 1993
- Sony Corporation
- Kanji Ohnishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for transmitting and recording signals
- Patent number 4,783,844
- Issue date Nov 8, 1988
- Sony Corporation
- Mitsuo Higashiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cordless telephone
- Patent number 4,768,219
- Issue date Aug 30, 1988
- Sony Corporation
- Masato Yamagata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cordless telephone
- Patent number 4,650,931
- Issue date Mar 17, 1987
- Sony Corporation
- Keizo Tsukada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cordless telephone
- Patent number 4,640,987
- Issue date Feb 3, 1987
- Keizo Tsukada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Telephone apparatus
- Publication number 20010031042
- Publication date Oct 18, 2001
- Masato Yamagata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Masato Yamagata

Person

Patents Grantslast 30 patents

Telephone answering unit with caller ID and variable ring sounds

Apparatus and method for allocating channels in plural communicatio...

Cordless telephone with division of channels into groups of channels

Cordless telephone apparatus having a low power stand-by mode and a...

Cordless telephone which intermittently monitors predetermined chan...

Cordless telephone with actuation of off-hook condition by operatio...

Cordless telephone system having a telephone answering machine func...

Apparatus for transmitting and recording signals

Cordless telephone

Cordless telephone

Cordless telephone

Patents Applicationslast 30 patents

Telephone apparatus