Inventor · disambiguated record
Yoshio Ishigaki
Also filed as: ISHIGAKI YOSHIO · NAGAI TAMIJI · SHINKAI KINYA
25 granted patents·470 citations·filing 1974–1993
97Inventor score
Top patents by PatentIndex Score
25 records- 0195US4242714ACurrent control circuitSONY CORP·Filed 1979·Granted Dec 30, 1980·44 cites·9 claims
- 0290US4206388ACurrent control circuit for horizontal deflection coil of television receiverSONY CORP·Filed 1978·Granted Jun 3, 1980·46 cites·23 claims
- 0387US4339792AVoltage regulator using saturable transformerYASUMURA MASAYUKI·Filed 1980·Granted Jul 13, 1982·39 cites·5 claims
- 0481US4694406AApparatus for displaying scrolling imagesNIPPON TELEGRAPH & TELEPHONE·Filed 1985·Granted Sep 15, 1987·53 cites·8 claims
- 0581US3968514AMagnetic recording and/or reproducing apparatusSONY CORP·Filed 1974·Granted Jul 6, 1976·22 cites·10 claims
- 0680US4280139AMuting circuit for a television receiverSONY CORP·Filed 1979·Granted Jul 21, 1981·24 cites·4 claims
- 0779US4358769ALoop antenna apparatus with variable directivitySONY CORP·Filed 1981·Granted Nov 9, 1982·37 cites·4 claims
- 0870US4850536ALiquid ejection apparatusARIMITSU IND·Filed 1987·Granted Jul 25, 1989·39 cites·4 claims
- 0970US4223342ACircuit for improving the frequency characteristic of a color television signalSONY CORP·Filed 1978·Granted Sep 16, 1980·16 cites·10 claims
- 1069US4083019ACurrent controlled emitter coupled multivibratorSONY CORP·Filed 1976·Granted Apr 4, 1978·16 cites·14 claims
- 1168US4322855ARemote control apparatusSONY CORP·Filed 1980·Granted Mar 30, 1982·21 cites·11 claims
- 1268US4170785AVideo signal reproducing apparatus with electron beam scanning velocity modulationSONY CORP·Filed 1977·Granted Oct 9, 1979·16 cites·15 claims
- 1365US4012771AApparatus for recording and/or reproducing color video signalsSONY CORP·Filed 1976·Granted Mar 15, 1977·14 cites·28 claims
- 1462US4570165AAdjustable loop and dipole antennaSONY CORP·Filed 1983·Granted Feb 11, 1986·19 cites·16 claims
- 1555US4338606AAntenna system with variable directivitySONY CORP·Filed 1979·Granted Jul 6, 1982·15 cites·7 claims
- 1652US4021749ASignal amplifying circuitSONY CORP·Filed 1975·Granted May 3, 1977·7 cites·14 claims
- 1748US3988598AMultipurpose semiconductor circuits utilizing a novel semiconductor deviceSONY CORP·Filed 1975·Granted Oct 26, 1976·7 cites·7 claims
- 1847US4081837AUndesired signal cancellerSONY CORP·Filed 1976·Granted Mar 28, 1978·7 cites·17 claims
- 1945US3980900AMultipurpose switching circuits utilizing a novel semiconductor deviceSONY CORP·Filed 1975·Granted Sep 14, 1976·6 cites·11 claims
- 2045US3976951AGain control circuits utilizing a novel semiconductor deviceSONY CORP·Filed 1975·Granted Aug 24, 1976·6 cites·9 claims
- 2144US4101928AColor television receiverSONY CORP·Filed 1976·Granted Jul 18, 1978·7 cites·7 claims
- 2234US5289152APermanent magnet magnetic circuitTDK CORP·Filed 1993·Granted Feb 22, 1994·5 cites·6 claims
- 2334US3988692AGain control circuitsSONY CORP·Filed 1975·Granted Oct 26, 1976·2 cites·8 claims
- 2431US4390818ATelevision receiverSONY CORP·Filed 1981·Granted Jun 28, 1983·1 cites·7 claims
- 2531US4322742AMethod and apparatus for improving the sharpness of a video pictureSONY CORP·Filed 1977·Granted Mar 30, 1982·1 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Yoshio Ishigaki files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →