Inventor · disambiguated record
Kazuo Yamagiwa
Also filed as: NUMAKURA TOSHIHIKO · TADA MASAHIRO · YAMAGIWA KAZUO
15 granted patents·292 citations·filing 1974–1986
93Inventor score
Files withSONY CORP15
Top patents by PatentIndex Score
15 records- 0198US4533949ASubscription television systemSONY CORP·Filed 1982·Granted Aug 6, 1985·134 cites·19 claims
- 0283US4609947AVideo signal recording apparatusSONY CORP·Filed 1983·Granted Sep 2, 1986·35 cites·28 claims
- 0372US4198650ACapacitive-type nonlinear emphasis circuitSONY CORP·Filed 1977·Granted Apr 15, 1980·18 cites·19 claims
- 0469US4220964ASecam recording and reproducing systemSONY CORP·Filed 1978·Granted Sep 2, 1980·16 cites·65 claims
- 0565US4177481AMagnetic recording and/or reproducing apparatus with chrominance crosstalk eliminationSONY CORP·Filed 1977·Granted Dec 4, 1979·14 cites·18 claims
- 0663US3947871AColor video signal reproducing apparatusSONY CORP·Filed 1974·Granted Mar 30, 1976·10 cites·8 claims
- 0760US4233621AMethod and apparatus for recording and reproducing a color-aligned line-sequential color video signalSONY CORP·Filed 1978·Granted Nov 11, 1980·12 cites·31 claims
- 0857US4193084AVideo recorder having means for maintaining constant the amplitude of the frequency-modulated signalSONY CORP·Filed 1977·Granted Mar 11, 1980·11 cites·25 claims
- 0951US4006423APhase detectorSONY CORP·Filed 1975·Granted Feb 1, 1977·9 cites·9 claims
- 1049US4326223AVideo signal recording and/or reproducing apparatus with gain controlSONY CORP·Filed 1979·Granted Apr 20, 1982·7 cites·26 claims
- 1148US4077047AColor killer enhancement in a video signal recording/playback systemSONY CORP·Filed 1976·Granted Feb 28, 1978·7 cites·16 claims
- 1246US4558283ACircuit for generating a sum or differential frequency signalSONY CORP·Filed 1984·Granted Dec 10, 1985·8 cites·10 claims
- 1337US4268874ATransducer deflection apparatus for use in a video signal reproducing deviceSONY CORP·Filed 1979·Granted May 19, 1981·4 cites·11 claims
- 1436US4223338AColor television receiver and VTR systemSONY CORP·Filed 1977·Granted Sep 16, 1980·3 cites·12 claims
- 1531US4769781AIC device compatible with input signals in the formats for two-line and four-line type bus linesSONY CORP·Filed 1986·Granted Sep 6, 1988·4 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →