Inventor · disambiguated record
Fumio Ishikawa
Also filed as: ISHIKAWA FUMIO
16 granted patents·1 pending application·273 citations·filing 1976–2001
94Inventor score
Top patents by PatentIndex Score
17 records- 0196US4612464AHigh speed buffer circuit particularly suited for use in sample and hold circuitsSONY CORP·Filed 1984·Granted Sep 16, 1986·110 cites·3 claims
- 0262US5140175ALight-emitting diode drive circuit with fast rise time and fall timeMITSUBISHI RAYON CO·Filed 1990·Granted Aug 18, 1992·27 cites·6 claims
- 0357US5079525AAudio-video modulator system on ic chipSONY CORP·Filed 1990·Granted Jan 7, 1992·18 cites·5 claims
- 0453US5841326AIntegrated oscillation circuit used for frequency conversion circuitSONY CORP·Filed 1995·Granted Nov 24, 1998·10 cites·5 claims
- 0551US4044570ARefrigeratorHITACHI LTD·Filed 1976·Granted Aug 30, 1977·23 cites·26 claims
- 0650US4645946ATwo phase trapezoidal signal generating circuitSONY CORP·Filed 1984·Granted Feb 24, 1987·8 cites·7 claims
- 0749US5678895AReclining device for seatFUJI KIKO KK·Filed 1995·Granted Oct 21, 1997·25 cites·28 claims
- 0841US5959293ADefective portion detecting device with a horizontal synchronized signalSONY CORP·Filed 1997·Granted Sep 28, 1999·11 cites·8 claims
- 0940US4540902ASample and hold circuitSONY CORP·Filed 1982·Granted Sep 10, 1985·4 cites·11 claims
- 1040US4160964AHigh frequency wide band resonant circuitSONY CORP·Filed 1977·Granted Jul 10, 1979·4 cites·1 claims
- 1139US5525937AFrequency conversion circuit with UHF/VHF common PLL bufferSONY CORP·Filed 1993·Granted Jun 11, 1996·9 cites·7 claims
- 1239US5124594ADigital phase comparator for use in a phase lock loopSONY CORP·Filed 1991·Granted Jun 23, 1992·10 cites·2 claims
- 1337US5474900AProcess for preparing purified syphilis antigen from Treponema palljdumSEKISUI CHEMICAL CO LTD·Filed 1994·Granted Dec 12, 1995·6 cites·6 claims
- 1436US5118669APeptides and intermediates therefor useful as antiallergic agents, vasodilators and immunoregulatorsHITACHI CHEMICAL CO LTD·Filed 1990·Granted Jun 2, 1992·6 cites·11 claims
- 1533US2002061064A1Video broadcasting equipment, image processing equipment, and cameraFiled 2001·Application pending·0 cites
- 1627US5591596AProcess for preparing a purified treponemal antigen and use thereofSEKISUI CHEMICAL CO LTD·Filed 1995·Granted Jan 7, 1997·2 cites·8 claims
- 1722US5223487APeptides as antiallergic agentsHITACHI CHEMICAL CO LTD·Filed 1992·Granted Jun 29, 1993·0 cites·3 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →