Inventor · disambiguated record
Yuichi Handa
Also filed as: HANDA YUICHI
44 granted patents·8 pending applications·649 citations·filing 1983–2025
98Inventor score
Top patents by PatentIndex Score
52 records- 0194US4887255AIntegrated optical headCANON KK·Filed 1987·Granted Dec 12, 1989·58 cites·9 claims
- 0292US4776661AIntegrated optical deviceCANON KK·Filed 1986·Granted Oct 11, 1988·94 cites·28 claims
- 0391US6008675APolarization-mode selective semiconductor laser with a bending channel stripe, apparatus including the same and optical communication system using the sameCANON KK·Filed 1997·Granted Dec 28, 1999·99 cites·20 claims
- 0489US10374517B2Apparatus for controlling power converterSOKEN INC·Filed 2018·Granted Aug 6, 2019·6 cites·7 claims
- 0587US10491136B2Bridge-less type electric power conversion device having current detection circuit of current transformer typeDENSO CORP·Filed 2018·Granted Nov 26, 2019·5 cites·5 claims
- 0687US10224826B2Control apparatus determining transformer magnetization in a DC/DC converter based on difference between primary and secondary currentsSOKEN INC·Filed 2018·Granted Mar 5, 2019·5 cites·11 claims
- 0786US11837961B2Power conversion apparatusDENSO CORP·Filed 2021·Granted Dec 5, 2023·2 cites·5 claims
- 0886US11183944B2Control apparatus for power converterDENSO CORP·Filed 2020·Granted Nov 23, 2021·2 cites·6 claims
- 0986US5901166AOscillation polarization mode selective semiconductor laser, light transmitter and optical communication system using the laserCANON KK·Filed 1997·Granted May 4, 1999·72 cites·13 claims
- 1086US4815027AOptical operation apparatus for effecting parallel signal processing by detecting light transmitted through a filter in the form of a matrixCANON KK·Filed 1987·Granted Mar 21, 1989·56 cites·31 claims
- 1183US11916494B2Controller for DC to AC conversion device for reducing distorting of output currentDENSO CORP·Filed 2021·Granted Feb 27, 2024·1 cites·7 claims
- 1282US10637370B2Apparatus for controlling DC-AC converter to reduce distortions in output currentDENSO CORP·Filed 2019·Granted Apr 28, 2020·3 cites·8 claims
- 1382US10615680B2Control apparatus for power converterDENSO CORP·Filed 2019·Granted Apr 7, 2020·3 cites·12 claims
- 1481US4935930ALaser light source for generating beam collimated in at least one directionCANON KK·Filed 1989·Granted Jun 19, 1990·29 cites·34 claims
- 1579US10232735B2Control device for power supply systemDENSO CORP·Filed 2016·Granted Mar 19, 2019·4 cites·13 claims
- 1678US11791736B2Power conversion apparatusDENSO CORP·Filed 2022·Granted Oct 17, 2023·0 cites·7 claims
- 1777US10848068B2Power conversion system control device and control systemDENSO CORP·Filed 2019·Granted Nov 24, 2020·2 cites·8 claims
- 1875US11316434B2Electric power conversion apparatusDENSO CORP·Filed 2019·Granted Apr 26, 2022·2 cites·14 claims
- 1975US10910958B2Control apparatus for power conversion systemDENSO CORP·Filed 2019·Granted Feb 2, 2021·2 cites·13 claims
- 2075US10075059B2Current detection apparatus and power conversion apparatusDENSO CORP·Filed 2017·Granted Sep 11, 2018·1 cites·11 claims
- 2175US6334014B1Optical fiber apparatus provided with demultiplexing/multiplexing unit on fiber's end portion, optical detecting apparatus provided with demultiplexing/multiplexing unit on its light receiving surface, and optical transmission system using the sameCANON KK·Filed 1999·Granted Dec 25, 2001·41 cites·48 claims
- 2275US4707059AIntegrated optical circuit element and method of making the sameCANON KK·Filed 1983·Granted Nov 17, 1987·29 cites·5 claims
- 2375US2025321256A1Power conversion device and programDENSO CORP·Filed 2025·Application pending·0 cites
- 2474US12015352B2Power conversion apparatusDENSO CORP·Filed 2022·Granted Jun 18, 2024·0 cites·6 claims
- 2573US2022190732A1Power conversion apparatusDENSO CORP·Filed 2022·Application pending·0 cites
- 2673US2022190733A1Power conversion apparatusDENSO CORP·Filed 2022·Application pending·0 cites
- 2770US2021242791A1Power conversion apparatusDENSO CORP·Filed 2021·Application pending·0 cites
- 2867US10686374B2Control apparatus for power conversion apparatusSOKEN INC·Filed 2018·Granted Jun 16, 2020·1 cites·6 claims
- 2966US10050513B2Control apparatus capable of appropriately suppressing a surge voltageDENSO CORP·Filed 2017·Granted Aug 14, 2018·1 cites·9 claims
- 3065US10432100B2Electric power conversion deviceDENSO CORP·Filed 2018·Granted Oct 1, 2019·1 cites·9 claims
- 3164US5379142ADemultiplexing apparatus and optical communication system using the demultiplexing apparatusCANON KK·Filed 1993·Granted Jan 3, 1995·26 cites·39 claims
- 3264US2025158529A1Power converter and non-transitory computer readable mediumDENSO CORP·Filed 2025·Application pending·0 cites
- 3360US5239410AMethod and apparatus for light amplification exhibiting a flat gain spectrumCANON KK·Filed 1991·Granted Aug 24, 1993·19 cites·48 claims
- 3458US11245326B2Control apparatus for electrical power converterDENSO CORP·Filed 2020·Granted Feb 8, 2022·0 cites·9 claims
- 3558US5926497ADiffraction grating with alternately-arranged different regions, optical semiconductor device with the diffraction grating, and apparatus and optical communication system using the sameCANON KK·Filed 1997·Granted Jul 20, 1999·21 cites·22 claims
- 3658US2020112258A1Power conversion apparatusDENSO CORP·Filed 2019·Application pending·0 cites
- 3757US5239600AOptical device with an optical coupler for effecting light branching/combining by splitting a wavefront of lightCANON KK·Filed 1991·Granted Aug 24, 1993·19 cites·11 claims
- 3856US12410922B2Outdoor unit of air conditionerCARRIER JAPAN CORP·Filed 2020·Granted Sep 9, 2025·0 cites·6 claims
- 3956US2024120805A1Rotating electrical machineDENSO CORP·Filed 2023·Application pending·0 cites
- 4055US12253044B2Control apparatus of motor generator, and power generation apparatus and moving body comprising sameDENSO CORP·Filed 2023·Granted Mar 18, 2025·0 cites·12 claims
- 4154US11201545B2Power conversion system control device and control systemDENSO CORP·Filed 2020·Granted Dec 14, 2021·0 cites·7 claims
- 4252US11418128B2Control apparatus for electric power conversion apparatusDENSO CORP·Filed 2020·Granted Aug 16, 2022·0 cites·4 claims
- 4352US10461650B2Control device for DC-DC converterDENSO CORP·Filed 2019·Granted Oct 29, 2019·0 cites·4 claims
- 4452US5862165AVariable wavelength light source using a laser, wavelength control method, optical communication system and optical communication methodCANON KK·Filed 1996·Granted Jan 19, 1999·17 cites·15 claims
- 4551US5369719AOptical device with an optical coupler for effecting light branching and/or combining and an optical amplifierCANON KK·Filed 1992·Granted Nov 29, 1994·16 cites·44 claims
- 4651US2024227776A9Control apparatusDENSO CORP·Filed 2023·Application pending·0 cites
- 4747US10836257B2Control apparatus and control system including the sameDENSO CORP·Filed 2019·Granted Nov 17, 2020·0 cites·23 claims
- 4847US4793675AElement having light waveguides and method of making sameCANON KK·Filed 1988·Granted Dec 27, 1988·12 cites·12 claims
- 4946US10763669B2Power conversion system control deviceDENSO CORP·Filed 2019·Granted Sep 1, 2020·0 cites·7 claims
- 5045US11258351B2Power converterDENSO CORP·Filed 2020·Granted Feb 22, 2022·0 cites·8 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →