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Chigasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Picture codec and teleconference terminal equipment
Patent number
6,285,391
Issue date
Sep 4, 2001
Hitachi, Ltd.
Yoji Shibata
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Picture codec and teleconference terminal equipment
Patent number
6,249,309
Issue date
Jun 19, 2001
Hitachi, Ltd.
Yoji Shibata
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Teleconference module with video codec for motion picture data
Patent number
5,936,945
Issue date
Aug 10, 1999
Hitachi, Ltd.
Yoji Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Picture codec for teleconference equipment, which forms and display...
Patent number
5,790,178
Issue date
Aug 4, 1998
Hitachi, Ltd.
Yoji Shibata
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Picture codec and teleconference terminal equipment
Patent number
5,777,663
Issue date
Jul 7, 1998
Hitachi, Ltd.
Yoji Shibata
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Video conversation/monitoring system having a remote monitoring fun...
Patent number
5,745,160
Issue date
Apr 28, 1998
Hitachi, Ltd.
Kiyoshi Ishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Picture codec and teleconference terminal equipment
Patent number
5,689,300
Issue date
Nov 18, 1997
Hitachi, Ltd.
Yoji Shibata
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Teleconference terminal equipment and teleconference module
Patent number
5,606,554
Issue date
Feb 25, 1997
Hitachi, Ltd.
Yoji Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Audio and video telecommunication system with remote monitoring fun...
Patent number
5,585,839
Issue date
Dec 17, 1996
Hitachi Ltd.
Kiyoshi Ishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Teleconference terminal equipment and teleconference module
Patent number
5,477,546
Issue date
Dec 19, 1995
Hitachi, Ltd.
Yoji Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Contact type image sensor having photoelectric conversion elements...
Patent number
5,162,644
Issue date
Nov 10, 1992
Hitachi, Ltd.
Tatsuya Nagata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for correcting an image signal
Patent number
5,130,822
Issue date
Jul 14, 1992
Hitachi, Ltd.
Tatsuya Nagata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Line image sensor with controlled photosensitivity
Patent number
4,996,438
Issue date
Feb 26, 1991
Hitachi, Ltd.
Tatsuya Nagata
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Facsimile equipment with direct-contact-type image sensor
Patent number
4,977,313
Issue date
Dec 11, 1990
Hitachi, Ltd.
Tatsuya Nagata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Direct-contact-type image sensor and image sensor assembly
Patent number
4,940,888
Issue date
Jul 10, 1990
Hitachi, Ltd.
Tatsuya Nagata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Picture codec and teleconference terminal equipment
Publication number
20020018114
Publication date
Feb 14, 2002
Yoji Shibata
G06 - COMPUTING CALCULATING COUNTING