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Kazuo Yamagiwa
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Tokyo, JP
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last 30 patents
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Patent Grant
IC device compatible with input signals in the formats for two-line...
Patent number
4,769,781
Issue date
Sep 6, 1988
Sony Corporation
Norihisa Shirota
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Video signal recording apparatus
Patent number
4,609,947
Issue date
Sep 2, 1986
Sony Corporation
Kazuo Yamagiwa
G11 - INFORMATION STORAGE
Information
Patent Grant
Circuit for generating a sum or differential frequency signal
Patent number
4,558,283
Issue date
Dec 10, 1985
Sony Corporation
Kazuo Yamagiwa
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Subscription television system
Patent number
4,533,949
Issue date
Aug 6, 1985
Sony Corporation
Yasushi Fujimura
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Video signal recording and/or reproducing apparatus with gain control
Patent number
4,326,223
Issue date
Apr 20, 1982
Sony Corporation
Kazuo Yamagiwa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transducer deflection apparatus for use in a video signal reproduci...
Patent number
4,268,874
Issue date
May 19, 1981
Sony Corporation
Kazuo Yamagiwa
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and apparatus for recording and reproducing a color-aligned...
Patent number
4,233,621
Issue date
Nov 11, 1980
Sony Corporation
Kazuo Yamagiwa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Color television receiver and VTR system
Patent number
4,223,338
Issue date
Sep 16, 1980
Sony Corporation
Hideshi Tamaru
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secam recording and reproducing system
Patent number
4,220,964
Issue date
Sep 2, 1980
Sony Corporation
Kazuo Yamagiwa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Capacitive-type nonlinear emphasis circuit
Patent number
4,198,650
Issue date
Apr 15, 1980
Sony Corporation
Masayuki Hongu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Video recorder having means for maintaining constant the amplitude...
Patent number
4,193,084
Issue date
Mar 11, 1980
Sony Corporation
Kazuo Yamagiwa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Magnetic recording and/or reproducing apparatus with chrominance cr...
Patent number
4,177,481
Issue date
Dec 4, 1979
Sony Corporation
Kazuo Yamagiwa
H04 - ELECTRIC COMMUNICATION TECHNIQUE