Inventor · disambiguated record
Masahiro Iwamura
Also filed as: IWAMURA M · IWAMURA MASAHIRO
93 granted patents·5 pending applications·2,277 citations·filing 1975–2014
99Inventor score
Top patents by PatentIndex Score
98 records- 0199US5133064AData processing system generating clock signal from an input clock, phase locked to the input clock and used for clocking logic devicesHITACHI LTD·Filed 1988·Granted Jul 21, 1992·182 cites·37 claims
- 0298US4853560ALogic circuit and semiconductor integrated circuit device capable of operating by different power suppliesHITACHI LTD·Filed 1988·Granted Aug 1, 1989·107 cites·66 claims
- 0395US7352143B2Interface circuit, power conversion device, and vehicle-mounted electric machinery systemHITACHI LTD·Filed 2006·Granted Apr 1, 2008·41 cites·19 claims
- 0491US7973405B2Integrated circuit for driving semiconductor device and power converterHITACHI LTD·Filed 2010·Granted Jul 5, 2011·13 cites·9 claims
- 0591US5388249AData processing system generating clock signal from an input clock, phase locked to the input clock and used for clocking logic devicesHITACHI LTD·Filed 1992·Granted Feb 7, 1995·41 cites·43 claims
- 0690US7208918B2Vehicle rotating electric machineHITACHI LTD·Filed 2005·Granted Apr 24, 2007·19 cites·11 claims
- 0790US4678943AInverting logic buffer BICMOS switching circuit using an enabling switch for three-state operation with reduced dissipationHITACHI LTD·Filed 1985·Granted Jul 7, 1987·51 cites·13 claims
- 0890US4129859ARaster scan type CRT display system having an image rolling functionHITACHI LTD·Filed 1977·Granted Dec 12, 1978·47 cites·5 claims
- 0989US6275399B1Method and apparatus for driving a semiconductor element with variable resistance circuitryHITACHI LTD·Filed 2000·Granted Aug 14, 2001·31 cites·14 claims
- 1088US5784630AMethod and apparatus for processing data in multiple modes in accordance with parallelism of program by using cache memoryHITACHI LTD·Filed 1995·Granted Jul 21, 1998·127 cites·17 claims
- 1188US5542083AInformation processor and information processing system utilizing clock signalHITACHI LTD·Filed 1995·Granted Jul 30, 1996·37 cites·13 claims
- 1287US5457790ALow power consumption semiconductor integrated circuit device and microprocessorHITACHI LTD·Filed 1993·Granted Oct 10, 1995·87 cites·19 claims
- 1386US6671815B2Low power consumption semiconductor integrated circuit device and microprocessorHITACHI LTD·Filed 2002·Granted Dec 30, 2003·33 cites·10 claims
- 1485US4694202ABi-MOS buffer circuitHITACHI LTD·Filed 1984·Granted Sep 15, 1987·27 cites·24 claims
- 1584US6392908B2Method and apparatus for driving a semiconductor elementHITACHI LTD·Filed 2001·Granted May 21, 2002·21 cites·24 claims
- 1684US5940272AElectric apparatus having heat radiating finHITACHI LTD·Filed 1997·Granted Aug 17, 1999·59 cites·10 claims
- 1784US5734913ALow power consumption semiconductor integrated circuit device and microprocessorHITACHI LTD·Filed 1995·Granted Mar 31, 1998·88 cites·20 claims
- 1884US4769561ABipolar transistor-field effect transistor composite circuitHITACHI LTD·Filed 1984·Granted Sep 6, 1988·26 cites·15 claims
- 1984US4661723AComposite circuit of bipolar transistors and field effect transistorsHITACHI LTD·Filed 1984·Granted Apr 28, 1987·23 cites·30 claims
- 2084US4228430ACRT Display apparatus with changeable cursor indiciaHITACHI LTD·Filed 1977·Granted Oct 14, 1980·46 cites·2 claims
- 2183US6373731B1Surge voltage suppressed power inverter using a voltage driven switching elementHITACHI LTD·Filed 2000·Granted Apr 16, 2002·46 cites·17 claims
- 2283US5153452ABipolar-MOS IC with internal voltage generator and LSI device with internal voltage generatorHITACHI LTD·Filed 1989·Granted Oct 6, 1992·33 cites·39 claims
- 2382US5506982AData processing system generating clock signal from an input clock, phase locked to the input clock and used for clocking logic devicesHITACHI LTD·Filed 1994·Granted Apr 9, 1996·21 cites·38 claims
- 2481US4808850AComposite circuit of bipolar transistors and field effect transistorsHITACHI LTD·Filed 1987·Granted Feb 28, 1989·24 cites·4 claims
- 2581US4694203AHigh speed bi-comos switching circuitHITACHI LTD·Filed 1985·Granted Sep 15, 1987·28 cites·9 claims
- 2680US4719373AGate circuit of combined field-effect and bipolar transistorsHITACHI LTD·Filed 1987·Granted Jan 12, 1988·28 cites·23 claims
- 2780US4689503ALevel conversion circuitry for a semiconductor integrated circuit utilizing bis CMOS circuit elementsHITACHI LTD·Filed 1984·Granted Aug 25, 1987·16 cites·42 claims
- 2879US7453240B2Generating apparatus and motor control apparatusHITACHI LTD·Filed 2006·Granted Nov 18, 2008·12 cites·9 claims
- 2978US5968160AMethod and apparatus for processing data in multiple modes in accordance with parallelism of program by using cache memoryHITACHI LTD·Filed 1997·Granted Oct 19, 1999·75 cites·13 claims
- 3078US5363332ACurrent-driven signal interface implemented in semiconductor integrated circuit deviceHITACHI LTD·Filed 1992·Granted Nov 8, 1994·27 cites·30 claims
- 3177US5398318AHigh speed, low noise output buffer with non-identical pairs of output transistorsHITACHI LTD·Filed 1990·Granted Mar 14, 1995·26 cites·28 claims
- 3276US5362998AComposite circuit of bipolar transistors and MOS transistors and semiconductor integrated circuit device using the sameHITACHI LTD·Filed 1994·Granted Nov 8, 1994·28 cites·42 claims
- 3375US5047669ATristate circuit using bipolar transistor and CMOS transistorHITACHI LTD·Filed 1989·Granted Sep 10, 1991·22 cites·23 claims
- 3475US4813020ASemiconductor deviceHITACHI LTD·Filed 1988·Granted Mar 14, 1989·30 cites·20 claims
- 3574US7541758B2MOS rectifying device, driving method thereof, and motor generator and motor vehicle using thereofHITACHI LTD·Filed 2005·Granted Jun 2, 2009·12 cites·4 claims
- 3674US6675311B2Data processing system generating clock signal from an input clock, phase locked to the input clock and used for clocking logic devicesHITACHI LTD·Filed 2001·Granted Jan 6, 2004·11 cites·9 claims
- 3774US4849658ADynamic logic circuit including bipolar transistors and field-effect transistorsHITACHI LTD·Filed 1987·Granted Jul 18, 1989·46 cites·10 claims
- 3872US5119314ASemiconductor integrated circuit deviceHITACHI LTD·Filed 1989·Granted Jun 2, 1992·44 cites·6 claims
- 3971US3997891ALight pen detection systemHITACHI LTD·Filed 1975·Granted Dec 14, 1976·31 cites·10 claims
- 4069US6029220APipelined semiconductor devices suitable for ultra large scale integrationHITACHI LTD·Filed 1992·Granted Feb 22, 2000·43 cites·20 claims
- 4169US4890017ACMOS-BiCMOS gate circuitHITACHI LTD·Filed 1987·Granted Dec 26, 1989·18 cites·19 claims
- 4267US7763974B2Integrated circuit for driving semiconductor device and power converterHITACHI LTD·Filed 2004·Granted Jul 27, 2010·12 cites·13 claims
- 4367US6040827ADriver circuit, driver integrated circuit, and display device and electronic device using the driver circuit and driver integrated circuitHITACHI LTD·Filed 1997·Granted Mar 21, 2000·31 cites·9 claims
- 4467US5734616ASemiconductor memory device and sense circuitHITACHI LTD·Filed 1996·Granted Mar 31, 1998·28 cites·25 claims
- 4566US4860148ASemiconductor integrated circuit device with a protective circuitHITACHI LTD·Filed 1987·Granted Aug 22, 1989·22 cites·15 claims
- 4665US5742551AMemory circuit improved in electrical characteristicsHITACHI LTD·Filed 1995·Granted Apr 21, 1998·20 cites·5 claims
- 4765US5378904ASemiconductor integrated circuit and method and system for designing layout of the sameHITACHI LTD·Filed 1991·Granted Jan 3, 1995·26 cites·20 claims
- 4865US4801983ASchottky diode formed on MOSFET drainHITACHI LTD·Filed 1986·Granted Jan 31, 1989·22 cites·2 claims
- 4964US5787043ASemiconductor memory device having a redundancy capabilityHITACHI LTD·Filed 1995·Granted Jul 28, 1998·24 cites·18 claims
- 5063US5387827ASemiconductor integrated circuit having logic gatesHITACHI LTD·Filed 1991·Granted Feb 7, 1995·13 cites·43 claims
Showing the top 50 of 98 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Masahiro Iwamura 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 →