Inventor · disambiguated record
Ryoichi Kobayashi
Also filed as: KOBAYASHI RYOICHI
52 granted patents·10 pending applications·1,149 citations·filing 1981–2022
99Inventor score
Files withHITACHI LTD32HITACHI AUTOMOTIVE SYSTEMS LTD8ULVAC COATING CORP7IDEMITSU KOSAN CO3SUMITOMO ELECTRIC INDUSTRIES3
Top patents by PatentIndex Score
62 records- 0196US6283104B1Ignition system for internal combustion engineHITACHI LTD·Filed 2000·Granted Sep 4, 2001·41 cites·5 claims
- 0296US5474864APhase shift mask and manufacturing method thereof and exposure method using phase shift maskULVAC COATING CORP·Filed 1993·Granted Dec 12, 1995·99 cites·8 claims
- 0393US4802952AMethod for manufacturing semiconductor absolute pressure sensor unitsHITACHI LTD·Filed 1988·Granted Feb 7, 1989·75 cites·4 claims
- 0491US7312545B2Controller for electric power steering and electric power steering systemHITACHI LTD·Filed 2005·Granted Dec 25, 2007·31 cites·4 claims
- 0589US4911016ASemiconductor strain gauge bridge circuitHITACHI LTD·Filed 1989·Granted Mar 27, 1990·61 cites·6 claims
- 0688US4813272ASemiconductor pressure sensorHITACHI LTD·Filed 1987·Granted Mar 21, 1989·56 cites·1 claims
- 0787US6576721B2Process for producing low polymer of ethyleneIDEMITSU PETROCHEMICAL CO·Filed 2001·Granted Jun 10, 2003·21 cites·14 claims
- 0887US6378514B1Igniter for internal combustion engineHITACHI LTD·Filed 2000·Granted Apr 30, 2002·48 cites·15 claims
- 0986US6595194B1Ignition system for internal combustion engineHITACHI LTD·Filed 2000·Granted Jul 22, 2003·23 cites·7 claims
- 1086US6257215B1Resin-sealed electronic apparatus for use in internal combustion enginesHITACHI LTD·Filed 2000·Granted Jul 10, 2001·45 cites·6 claims
- 1186US5664550AIgnition system of internal combustion engineHITACHI LTD·Filed 1996·Granted Sep 9, 1997·33 cites·8 claims
- 1284US6321734B1Resin sealed electronic device and method of fabricating the same and ignition coil for internal combustion engine using the sameHITACHI LTD·Filed 2000·Granted Nov 27, 2001·39 cites·16 claims
- 1383US4893215AElectronic circuit apparatus of automobileHITACHI LTD·Filed 1988·Granted Jan 9, 1990·64 cites·7 claims
- 1482US5830607APhase shift mask and manufacturing method thereof and exposure method using phase shift maskULVAC COATING CORP·Filed 1997·Granted Nov 3, 1998·46 cites·3 claims
- 1582US5691090APhase shift mask and manufacturing method thereof and exposure method using phase shift maskULVAC COATING CORP·Filed 1996·Granted Nov 25, 1997·38 cites·27 claims
- 1681US10627582B2Optical connection component and method of manufacturing optical connection componentSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Apr 21, 2020·3 cites·20 claims
- 1781US6684867B2Ignition apparatus for internal combustion engine and one-chip semiconductor for internal combustion engine ignitingHITACHI LTD·Filed 2001·Granted Feb 3, 2004·18 cites·8 claims
- 1881US5629114APhase shift mask and manufacturing method thereof and exposure method using phase shift mask comprising a semitransparent regionULVAC COATING CORP·Filed 1995·Granted May 13, 1997·37 cites·19 claims
- 1980US6291990B1Revolution sensorHITACHI LTD·Filed 1998·Granted Sep 18, 2001·49 cites·10 claims
- 2079US7291685B2Process for producing low polymer of α-olefinIDEMITSU KOSAN CO·Filed 2002·Granted Nov 6, 2007·11 cites·2 claims
- 2178US6539929B2Ignition device for an internal combustion engineHITACHI LTD·Filed 2001·Granted Apr 1, 2003·26 cites·8 claims
- 2277US6689515B2Phase-shifting photomask blank, phase-shifting photomask, method for producing them and apparatus for manufacturing the blankULVAC COATING CORP·Filed 2001·Granted Feb 10, 2004·13 cites·2 claims
- 2376US5674647APhase shift mask and manufacturing method thereof and exposure method using phase shift maskULVAC COATING CORP·Filed 1995·Granted Oct 7, 1997·33 cites·59 claims
- 2475US5143553AControl apparatus of ignition current conducting timeHITACHI LTD·Filed 1991·Granted Sep 1, 1992·19 cites·17 claims
- 2572US7169961B2Process for producing low polymer of α-olefinIDEMITSU PETROCHEMICAL CO·Filed 2002·Granted Jan 30, 2007·12 cites·13 claims
- 2672US5967128AIgnition apparatus for an internal combustion engineHITACHI LTD & HITACHI CAR ENGI·Filed 1998·Granted Oct 19, 1999·22 cites·10 claims
- 2771US8738232B2Electronic control apparatusKANEKAWA NOBUYASU·Filed 2011·Granted May 27, 2014·4 cites·10 claims
- 2870US6286491B1Ignition apparatus and an ignition control system of an internal combustion engine and IGBT of an internal combustion engineHITACHI LTD·Filed 1999·Granted Sep 11, 2001·18 cites·7 claims
- 2966US6484708B2Resin sealed electronic deviceHITACHI LTD·Filed 2002·Granted Nov 26, 2002·13 cites·5 claims
- 3066US5135319AInk ribbon cassette for use in a thermal transfer printer and having tension means and symmetrically located guide rollersHITACHI LTD·Filed 1989·Granted Aug 4, 1992·16 cites·6 claims
- 3166US2024360254A1Method for producing alpha-olefinIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 3264US7801070B2Mobile communication system, mobile terminal transfer device, and mobile communication methodNTT DOCOMO INC·Filed 2003·Granted Sep 21, 2010·9 cites·2 claims
- 3363US2024239727A1Method for producing alpha-olefinIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 3461US6228541B1Phase-shifting photomask blank, phase-shifting photomask, method for producing them and apparatus for manufacturing the blankULVAC COATING CORP·Filed 1999·Granted May 8, 2001·19 cites·20 claims
- 3560US9882522B2Power conversion device, electric power steering system, electric vehicle, electronic control throttle, and electric brakeHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2014·Granted Jan 30, 2018·1 cites·17 claims
- 3660US7969229B2On-chip redundancy high-reliable system and method of controlling the sameHITACHI LTD·Filed 2009·Granted Jun 28, 2011·1 cites·22 claims
- 3760US4591780AConstant current source device having a ratio metricity between supply voltage and output currentHITACHI LTD·Filed 1983·Granted May 27, 1986·15 cites·9 claims
- 3858US9020704B2Electronic control apparatusHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2014·Granted Apr 28, 2015·2 cites·16 claims
- 3957US9917538B2Motor driving circuit, motor driving system, electric power steering system, electric brake system, and vehicle driving systemHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Granted Mar 13, 2018·1 cites·10 claims
- 4056US4404539ASemiconductor strain gaugeHITACHI LTD·Filed 1981·Granted Sep 13, 1983·15 cites·6 claims
- 4155US4836176AIgnition apparatus of electronic distribution type for multi-cylinder internal combustion engineHITACHI LTD·Filed 1988·Granted Jun 6, 1989·16 cites·5 claims
- 4254US6046584AInternal combustion engine rotating position detector using a differential signal from magnetic sensing portionsHITACHI LTD·Filed 1997·Granted Apr 4, 2000·12 cites·4 claims
- 4351US4550612AIntegrated pressure sensorHITACHI LTD·Filed 1984·Granted Nov 5, 1985·10 cites·7 claims
- 4450US10374531B2Motor control device and electric power steering system using said motor drive circuitHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted Aug 6, 2019·0 cites·11 claims
- 4550US10246126B2Feedback control apparatus, electrically driven power steering apparatusHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted Apr 2, 2019·0 cites·8 claims
- 4648US2011234304A1On-Chip Redundancy High-Reliable System and Method of Controlling the SameHITACHI LTD·Filed 2011·Application pending·0 cites
- 4746US2015054961A1Image capture deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Application pending·0 cites
- 4844US6082344AIgnition device for an internal combustion engineHITACHI LTD·Filed 1998·Granted Jul 4, 2000·7 cites·4 claims
- 4944US5724601ASwitching state detecting apparatus, control unit and transmission unit for waking up a microcomputerHITACHI LTD·Filed 1996·Granted Mar 3, 1998·7 cites·7 claims
- 5044US2014340547A1Imaging apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Application pending·0 cites
Showing the top 50 of 62 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →