Inventor · disambiguated record
Kazuhisa Ishiguro
Also filed as: ISHIGURO KAZUHISA
24 granted patents·8 pending applications·242 citations·filing 1983–2009
95Inventor score
Top patents by PatentIndex Score
32 records- 0173US7795979B2Automatic gain control circuit and low noise amplifying circuitRICOH KK·Filed 2006·Granted Sep 14, 2010·8 cites·7 claims
- 0271US7602248B2Power amplifier and its idling current setting circuitNIIGATA SEIMITSU CO LTD·Filed 2006·Granted Oct 13, 2009·7 cites·3 claims
- 0369US5027428APower saving arrangement and power saving methodSANYO ELECTRIC CO·Filed 1989·Granted Jun 25, 1991·88 cites·10 claims
- 0468US4587500AVariable reactance circuit producing negative to positive varying reactanceSANYO ELECTRIC CO·Filed 1983·Granted May 6, 1986·19 cites·7 claims
- 0566US7991371B2Automatic gain control apparatus for wireless communication apparatusRICOH CO LTD·Filed 2007·Granted Aug 2, 2011·3 cites·10 claims
- 0665US4972482AFm stereo demodulatorSANYO ELECTRIC CO·Filed 1988·Granted Nov 20, 1990·28 cites·19 claims
- 0763US7843258B2Filter circuitRICOH CO LTD·Filed 2006·Granted Nov 30, 2010·4 cites·3 claims
- 0861US7848721B2Antenna damping circuit and high frequency receiver employing sameRICOH CO LTD·Filed 2005·Granted Dec 7, 2010·2 cites·8 claims
- 0960US7868695B2Differential amplifierRICOH CO LTD·Filed 2006·Granted Jan 11, 2011·4 cites·2 claims
- 1058US5014017APower-saving low-frequency power amplifierSANYO ELECTRIC CO·Filed 1989·Granted May 7, 1991·12 cites·9 claims
- 1156US7812685B2Automatic regulator of filterRICOH KK·Filed 2006·Granted Oct 12, 2010·3 cites·3 claims
- 1249US5087890AAmplifier circuitSANYO ELECTRIC CO·Filed 1990·Granted Feb 11, 1992·9 cites·6 claims
- 1347US4944010AStereo demodulator and a demodulating method thereofSANYO ELECTRIC CO·Filed 1988·Granted Jul 24, 1990·10 cites·10 claims
- 1445US2009111416A1Intermodulation disturbance detecting circuitNIIGATA SEIMITSU CO LTD·Filed 2008·Application pending·0 cites
- 1545US2009124228A1Intermodulation disturbance detecting unitNIIGATA SEIMITSU CO LTD·Filed 2008·Application pending·0 cites
- 1644US7639085B2Automatic gain control circuitRICOH KK·Filed 2005·Granted Dec 29, 2009·0 cites·2 claims
- 1744US5940428ASpread spectrum signal receiving apparatusSANYO ELECTRIC CO·Filed 1996·Granted Aug 17, 1999·14 cites·47 claims
- 1844US2009027128A1Variable gain amplifierNIIGATA SEIMITSU CO LTD·Filed 2008·Application pending·0 cites
- 1939US4852167AFMX stereophonic receiverSANYO ELECTRIC CO·Filed 1988·Granted Jul 25, 1989·5 cites·8 claims
- 2038US2009124227A1Automatic gain control circuitISHIGURO KAZUHISA·Filed 2008·Application pending·0 cites
- 2138US2009176471A1ReceiverISHIGURO KAZUHISA·Filed 2009·Application pending·0 cites
- 2237US5903593ASpread spectrum signal receiverSANYO ELECTRIC CO·Filed 1997·Granted May 11, 1999·8 cites·9 claims
- 2337US5065112AAmplification circuit with improved linearitySANYO ELECTRIC CO·Filed 1990·Granted Nov 12, 1991·5 cites·8 claims
- 2436US7852967B2Automatic power output control circuitRICOH CO LTD·Filed 2007·Granted Dec 14, 2010·0 cites·1 claims
- 2535US8284876B2Automatic gain control circuitISHIGURO KAZUHISA·Filed 2006·Granted Oct 9, 2012·0 cites·2 claims
- 2635US4809328AFM/FMX stereophonic receiverSANYO ELECTRIC CO·Filed 1988·Granted Feb 28, 1989·6 cites·14 claims
- 2735US2009261905A1Open gain adjustment circuit for operational amplifierNIIGATA SEIMITSU CO LTD·Filed 2006·Application pending·0 cites
- 2835US2009310723A1Automatic gain control circuitISHIGURO KAZUHISA·Filed 2007·Application pending·0 cites
- 2933US4864637AFMX stereophonic broadcast receiverSANYO ELECTRIC CO·Filed 1988·Granted Sep 5, 1989·4 cites·2 claims
- 3033US2009124225A1Tuning circuit and radio receiver using the sameISHIGURO KAZUHISA·Filed 2008·Application pending·0 cites
- 3131US5068544AFsk data waveform shaping circuitSANYO ELECTRIC CO·Filed 1990·Granted Nov 26, 1991·2 cites·2 claims
- 3230US4990872AVariable reactance circuit producing negative to positive varying reactanceSANYO ELECTRIC CO·Filed 1988·Granted Feb 5, 1991·1 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →