Inventor · disambiguated record
Isao Yamamoto
Also filed as: YAMAMOTO ISAO
103 granted patents·14 pending applications·1,543 citations·filing 1980–2021
99Inventor score
Top patents by PatentIndex Score
117 records- 0199US7560915B2Power supply apparatus provided with regulation function and boosting of a regulated voltageROHM CO LTD·Filed 2005·Granted Jul 14, 2009·179 cites·8 claims
- 0298US7304871B2Boost circuit capable of step-up ratio controlROHM CO LTD·Filed 2005·Granted Dec 4, 2007·47 cites·5 claims
- 0394US8779995B2High-frequency waveguide and phase shifter using same, radiator, electronic device which uses this phase shifter and radiator, antenna device, and electronic device equipped with sameKIRINO HIDEKI·Filed 2009·Granted Jul 15, 2014·47 cites·10 claims
- 0493US6822403B2Light emitting element drive device and electronic device having light emitting elementROHM CO LTD·Filed 2003·Granted Nov 23, 2004·83 cites·9 claims
- 0592US4466164ASupercalendering apparatusFUJI PHOTO FILM CO LTD·Filed 1981·Granted Aug 21, 1984·42 cites·11 claims
- 0691US7315095B2Voltage regulating apparatus supplying a drive voltage to a plurality of loadsROHM CO LTD·Filed 2005·Granted Jan 1, 2008·31 cites·7 claims
- 0791US5464458ASystem for purifying exhaust gasFiled 1994·Granted Nov 7, 1995·80 cites·8 claims
- 0889US7754960B2Electronic equipment synchronously controlling light emission from light emitting devices and audio controlROHM CO LTD·Filed 2005·Granted Jul 13, 2010·21 cites·11 claims
- 0989US7307385B2Boost controller capable of step-up ratio controlROHM CO LTD·Filed 2005·Granted Dec 11, 2007·23 cites·14 claims
- 1089US6628890B1Digital recording/reproduction apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Sep 30, 2003·58 cites·2 claims
- 1189US5158323AAirbag restraint system for motor vehicleNISSAN MOTOR·Filed 1991·Granted Oct 27, 1992·76 cites·7 claims
- 1287US4324177ACalender roll for supercalenderFUJI PHOTO FILM CO LTD·Filed 1980·Granted Apr 13, 1982·52 cites·8 claims
- 1386US7081742B2Power supply apparatus provided with overcurrent protection functionROHM CO LTD·Filed 2005·Granted Jul 25, 2006·16 cites·16 claims
- 1486US6949892B2Light emitting element drive device and electronic device light emitting elementROHM CO LTD·Filed 2003·Granted Sep 27, 2005·32 cites·8 claims
- 1585US7812580B2Power supply apparatus having switchable switching regulator and linear regulatorROHM CO LTD·Filed 2006·Granted Oct 12, 2010·22 cites·11 claims
- 1684US7456619B2Power supply circuitROHM CO LTD·Filed 2007·Granted Nov 25, 2008·13 cites·5 claims
- 1783US7768247B2Under voltage lock out circuit and methodROHM CO LTD·Filed 2008·Granted Aug 3, 2010·16 cites·12 claims
- 1883US7579784B2Switching power supply and its control circuit, and electronic apparatus employing such switching power supplyROHM CO LTD·Filed 2005·Granted Aug 25, 2009·21 cites·9 claims
- 1983US7391406B2Light emission control circuit uniformly and non-uniformly controlling a plurality of light-emitting elementsROHM CO LTD·Filed 2004·Granted Jun 24, 2008·31 cites·12 claims
- 2082US7253596B2Power supply apparatus capable of supplying a stable converted voltageROHM CO LTD·Filed 2004·Granted Aug 7, 2007·42 cites·13 claims
- 2181US7486064B2Under voltage lock out circuit and methodROHM CO LTD·Filed 2007·Granted Feb 3, 2009·17 cites·15 claims
- 2281US7423626B2Light-emission control circuitROHM CO LTD·Filed 2004·Granted Sep 9, 2008·19 cites·20 claims
- 2380US10505396B2Wireless power receiving apparatusROHM CO LTD·Filed 2016·Granted Dec 10, 2019·4 cites·24 claims
- 2480US7863833B2DC/DC converter control circuit, and power supply apparatus, light emitting apparatus and electronic device using the sameROHM CO LTD·Filed 2007·Granted Jan 4, 2011·11 cites·11 claims
- 2580US7483021B2Drive control circuit, emission control circuit, communication apparatus and drive control methodROHM CO LTD·Filed 2005·Granted Jan 27, 2009·6 cites·18 claims
- 2679US5127487ASystem and method for automatically controlling a vehicle speed to a desired cruise speed with a release functionNISSAN MOTOR·Filed 1988·Granted Jul 7, 1992·35 cites·7 claims
- 2777US7592856B2Charge pump circuit driver circuit having a plurality of oscillatorsROHM CO LTD·Filed 2005·Granted Sep 22, 2009·6 cites·8 claims
- 2876US7876144B2Start-up circuit and start-up methodROHM CO LTD·Filed 2007·Granted Jan 25, 2011·7 cites·8 claims
- 2975US5058698ACruise control system for automotive vehicleNISSAN MOTOR·Filed 1990·Granted Oct 22, 1991·39 cites·6 claims
- 3074US7230474B2Current drive circuit reducing VDS dependencyROHM CO LTD·Filed 2004·Granted Jun 12, 2007·11 cites·8 claims
- 3173US7868744B2Driving apparatus of moverROHM CO LTD·Filed 2008·Granted Jan 11, 2011·2 cites·4 claims
- 3273US7821233B2Charging circuitROHM CO LTD·Filed 2007·Granted Oct 26, 2010·11 cites·19 claims
- 3372US8143815B2DC/DC converterTAMEGAI YOICHI·Filed 2010·Granted Mar 27, 2012·2 cites·6 claims
- 3470US8093876B2Power control circuit to prevent a malfunction of a protection circuitARAKI KYOICHIRO·Filed 2007·Granted Jan 10, 2012·12 cites·8 claims
- 3570US7898217B2Charge control circuitROHM CO LTD·Filed 2007·Granted Mar 1, 2011·9 cites·6 claims
- 3669US9128160B2Battery fuel gauge circuitANDO KIMIO·Filed 2012·Granted Sep 8, 2015·3 cites·9 claims
- 3768US8237415B2Control circuit and method for capacitor charging circuitIWASAKI TATSUYA·Filed 2008·Granted Aug 7, 2012·5 cites·10 claims
- 3868US5107948ARunning state control system for motor vehicleNISSAN MOTOR·Filed 1990·Granted Apr 28, 1992·30 cites·7 claims
- 3964US7385642B2Camera portable telephone including LEDs used for both a camera flash and call notification of an incoming callROHM CO LTD·Filed 2004·Granted Jun 10, 2008·6 cites·7 claims
- 4064US6130571ASemiconductor device with fine-adjustable resistanceROHM CO LTD·Filed 1998·Granted Oct 10, 2000·28 cites·18 claims
- 4164US4846643AApparatus for making cotton candyTOSHIBA ELECTRIC APPLIANCES·Filed 1987·Granted Jul 11, 1989·41 cites·13 claims
- 4263US7248002B2Light emission control apparatus and light emission control method with temperature-sensitive driving current controlROHM CO LTD·Filed 2004·Granted Jul 24, 2007·9 cites·19 claims
- 4362US12386243B2Lens drive module, imaging module, electronic device, and lens unitSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2021·Granted Aug 12, 2025·0 cites·10 claims
- 4462US8552963B2Switching regulator control circuit, current drive circuit, light emitting apparatus, and information terminal apparatusITO TOMOYUKI·Filed 2005·Granted Oct 8, 2013·2 cites·2 claims
- 4562US7994737B2Drive circuit of DC/DC converter, light emitting apparatus and electronic device using the sameROHM CO LTD·Filed 2006·Granted Aug 9, 2011·6 cites·8 claims
- 4662US7368884B2DC/DC converterROHM CO LTD·Filed 2006·Granted May 6, 2008·1 cites·12 claims
- 4761US8134106B2Current detection circuitTAMEGAI YOICHI·Filed 2006·Granted Mar 13, 2012·3 cites·23 claims
- 4861US5610555ALow-voltage driven, audio signal amplifying apparatus and a portable acoustic system using said apparatusROHM CO LTD·Filed 1995·Granted Mar 11, 1997·20 cites·8 claims
- 4959US7859229B2Discharge devicePANASONIC PHOTO & LIGHTING CO·Filed 2006·Granted Dec 28, 2010·7 cites·11 claims
- 5059US7190195B2Input circuit and output circuitROHM CO LTD·Filed 2005·Granted Mar 13, 2007·1 cites·18 claims
Showing the top 50 of 117 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →