Inventor · disambiguated record
Chihiro Okado
Also filed as: OKADO CHIHIRO
26 granted patents·987 citations·filing 1974–2000
97Inventor score
Top patents by PatentIndex Score
26 records- 0196US4827151AUninterruptible power supply utilizing a synchronized chopper for power factor improvementTOSHIBA KK·Filed 1988·Granted May 2, 1989·141 cites·4 claims
- 0295US4445167AInverter systemTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Apr 24, 1984·69 cites·8 claims
- 0393US4721869AProtection circuit for an insulated gate bipolar transistor utilizing a two-step turn offTOSHIBA KK·Filed 1986·Granted Jan 26, 1988·61 cites·15 claims
- 0491US4546422AControl system for a voltage-type inverterTOKYO SHIBAURA ELECTRIC CO·Filed 1983·Granted Oct 8, 1985·51 cites·10 claims
- 0588US5844193AControl equipment for resistance welding machineTOSHIBA KK·Filed 1995·Granted Dec 1, 1998·79 cites·4 claims
- 0688US4597037AControl system for a voltage-type inverterTOSHIBA KK·Filed 1984·Granted Jun 24, 1986·32 cites·8 claims
- 0787US5485341APower transistor overcurrent protection circuitTOSHIBA KK·Filed 1993·Granted Jan 16, 1996·50 cites·22 claims
- 0885US4719531AOvercurrent protective circuit for modulated-conductivity type MOSFETTOSHIBA KK·Filed 1986·Granted Jan 12, 1988·36 cites·14 claims
- 0983US4646222AInverter provided with an overvoltage clamping circuitTOKYO SHIBAURA ELECTRIC CO·Filed 1986·Granted Feb 24, 1987·55 cites·14 claims
- 1080US4748550APulse width modulator used for a power converter with a transformerTOSHIBA KK·Filed 1987·Granted May 31, 1988·39 cites·6 claims
- 1175US5446365AMethod and apparatus for controlling a battery carTOSHIBA KK·Filed 1993·Granted Aug 29, 1995·62 cites·10 claims
- 1275US5123746ABridge type power converter with improved efficiencyTOSHIBA KK·Filed 1990·Granted Jun 23, 1992·54 cites·11 claims
- 1374US5493485AProtection device for stopping operation of an inverterTOSHIBA KK·Filed 1993·Granted Feb 20, 1996·63 cites·13 claims
- 1472US4364109AControl device of invertersTOKYO SHIBAURA ELECTRIC CO·Filed 1981·Granted Dec 14, 1982·26 cites·5 claims
- 1571US3965403AConstant power control of a D.C. electric motor for handling cargoesTOKYO SHIBAURA ELECTRIC CO·Filed 1974·Granted Jun 22, 1976·16 cites·6 claims
- 1667US6107784ASystem interconnection protective device for non-utility generation equipmentTOSHIBA KK·Filed 1997·Granted Aug 22, 2000·60 cites·25 claims
- 1763US5965038AControl equipment for resistance welding machineTOSHIBA KK·Filed 1997·Granted Oct 12, 1999·22 cites·4 claims
- 1860US6342791B1Diode defect detecting deviceNAS TOA CO LTD·Filed 2000·Granted Jan 29, 2002·15 cites·9 claims
- 1959US4403280ACommutation control device for current type invertersTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Sep 6, 1983·12 cites·6 claims
- 2055US4309751AMethod and apparatus for controlling current type invertersTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Jan 5, 1982·9 cites·4 claims
- 2153US4236201AInverter deviceTOKYO SHIBAURA ELECTRIC CO·Filed 1978·Granted Nov 25, 1980·8 cites·7 claims
- 2250US4314189ADevice for controlling the commutating angle of an inverter deviceTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Feb 2, 1982·9 cites·7 claims
- 2344US4260948AMethod and apparatus for controlling electric valves in AC power supplyTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Apr 7, 1981·5 cites·4 claims
- 2443US4499363ADC Power sourceTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Feb 12, 1985·7 cites·18 claims
- 2536US4263541AField control system for controlling induction machinesTOKYO SHIBAURA ELECTRIC CO·Filed 1979·Granted Apr 21, 1981·3 cites·5 claims
- 2635US4419559AResistive welder having a controlled output voltage unaffected by secondary circuit disconnectionTOKYO SHIBAURA ELECTRIC CO·Filed 1981·Granted Dec 6, 1983·3 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →