Inventor · disambiguated record
Keiji Hirao
Also filed as: HIRAO KEIJI
38 granted patents·9 pending applications·896 citations·filing 1989–2022
98Inventor score
Top patents by PatentIndex Score
47 records- 0197US6615871B2Fluid control apparatusTADAHIRO OHMI·Filed 2002·Granted Sep 9, 2003·61 cites·12 claims
- 0297US6257270B1Fluid control deviceOHMI TADAHIRO·Filed 1999·Granted Jul 10, 2001·91 cites·1 claims
- 0397US5769110AFluid control apparatusFUJIKIN KK·Filed 1996·Granted Jun 23, 1998·85 cites·2 claims
- 0496US5975112AFluid control deviceOHMI TADAHIRO·Filed 1997·Granted Nov 2, 1999·85 cites·4 claims
- 0594US8724974B2VaporizerOHMI TADAHIRO·Filed 2012·Granted May 13, 2014·9 cites·16 claims
- 0694US5983933AShutoff-opening deviceOHMI TADAHIRO·Filed 1997·Granted Nov 16, 1999·85 cites·4 claims
- 0793US6039360ACouplings for fluid controllersOHMI TADAHIRO·Filed 1998·Granted Mar 21, 2000·82 cites·6 claims
- 0887US5988217AShutoff-opening deviceTADAHIRO OHMI·Filed 1997·Granted Nov 23, 1999·57 cites·6 claims
- 0984US7553459B2Apparatus and reactor for generating and feeding high purity moistureFUJIKIN KK·Filed 2006·Granted Jun 30, 2009·6 cites·31 claims
- 1082US11391668B2Concentration measurement deviceFUJIKIN KK·Filed 2019·Granted Jul 19, 2022·1 cites·6 claims
- 1181US5837907AMethod of tightening threaded membersFUJIKIN KK·Filed 1997·Granted Nov 17, 1998·32 cites·11 claims
- 1280US6733732B2Reactor for generating moistureFUJIKIN KK·Filed 2001·Granted May 11, 2004·21 cites·23 claims
- 1377US7815872B2Reactor for generating moisture and moisture generating and feeding apparatus for which the reactor is employedFUJIKIN KK·Filed 2005·Granted Oct 19, 2010·6 cites·20 claims
- 1475US11630058B2Concentration measurement deviceFUJIKIN KK·Filed 2022·Granted Apr 18, 2023·0 cites·5 claims
- 1574US8469046B2Method for parallel operation of reactors that generate moistureMINAMI YUKIO·Filed 2007·Granted Jun 25, 2013·5 cites·10 claims
- 1673US6617289B2Method for producing esterNOF CORP·Filed 2001·Granted Sep 9, 2003·11 cites·13 claims
- 1772US6919056B2Reactor for generating moistureFUJIKIN KK·Filed 2001·Granted Jul 19, 2005·11 cites·10 claims
- 1871US7258845B2Apparatus and reactor for generating and feeding high purity moistureFUJIKIN KK·Filed 2001·Granted Aug 21, 2007·8 cites·5 claims
- 1971US5904381AFluid couplingOHMI TADAHIRO MIYAGI·Filed 1997·Granted May 18, 1999·38 cites·5 claims
- 2070US6939980B2Process for producing esterNOF CORP·Filed 2001·Granted Sep 6, 2005·12 cites·6 claims
- 2170US5892738ADisk recording-playback device and disk loading or unloading methodSANYO ELECTRIC CO·Filed 1997·Granted Apr 6, 1999·23 cites·4 claims
- 2268US7368092B2Apparatus and reactor for generating and feeding high purity moistureFUJIKIN KK·Filed 2003·Granted May 6, 2008·6 cites·11 claims
- 2367US10604840B2Liquid level indicator and liquid raw material vaporization feederFUJIKIN KK·Filed 2015·Granted Mar 31, 2020·1 cites·16 claims
- 2467US7008598B2Reactor for generating moistureTADAHIRO OHMI·Filed 2004·Granted Mar 7, 2006·7 cites·20 claims
- 2567US5671196AMethod for controlling a rotatable optical disk storing magazineSANYO ELECTRIC CO·Filed 1996·Granted Sep 23, 1997·20 cites·5 claims
- 2664US6105475ATightening deviceFUJIKIN KK·Filed 1997·Granted Aug 22, 2000·23 cites·24 claims
- 2764US5721715AControl system for disc playing deviceSANYO ELECTRIC CO·Filed 1996·Granted Feb 24, 1998·34 cites·4 claims
- 2864US5104925ASynthetic resin compositionsNIPPON OILS & FATS CO LTD·Filed 1989·Granted Apr 14, 1992·18 cites·7 claims
- 2958US8156242B2Command processing apparatusHIRAO KEIJI·Filed 2005·Granted Apr 10, 2012·3 cites·7 claims
- 3058US6408879B1Fluid control deviceTADAHIRO OHMI·Filed 1998·Granted Jun 25, 2002·17 cites·1 claims
- 3157US6014498ADevice for heating fluid control apparatusFUJIKIN KK·Filed 1998·Granted Jan 11, 2000·18 cites·6 claims
- 3257US2007231225A1Apparatus and reactor for generating and feeding high purity moistureTADAHIRO OHMI·Filed 2007·Application pending·0 cites
- 3353US6274098B1Apparatus for the treatment of exhaust gases by combining hydrogen and oxygenFUJIKIN KK·Filed 1999·Granted Aug 14, 2001·19 cites·5 claims
- 3451US2024003006A1Vaporizer, gas supply apparatus, and method of controlling gas supply apparatusFUJIKIN KK·Filed 2021·Application pending·0 cites
- 3550US2024101446A1Vaporizer and vaporization supply deviceFUJIKIN KK·Filed 2022·Application pending·0 cites
- 3648US7502452B2Contents reproducing apparatus with telephone functionSANYO ELECTRIC CO·Filed 2003·Granted Mar 10, 2009·0 cites·9 claims
- 3743US11390951B2Fluid control deviceFUJIKIN KK·Filed 2018·Granted Jul 19, 2022·0 cites·10 claims
- 3842US2012082596A1Reactor for Moisture GenerationOHMI TADAHIRO·Filed 2011·Application pending·0 cites
- 3941US2002124894A1Fluid control deviceTADAHIRO OHMI·Filed 2002·Application pending·0 cites
- 4041US2020149162A1Fluid control deviceFUJIKIN KK·Filed 2018·Application pending·0 cites
- 4140US10646844B2Vaporization supply apparatusFUJIKIN KK·Filed 2016·Granted May 12, 2020·0 cites·12 claims
- 4238US9012583B2Flow improver for oils and fatsYOSHIKAWA FUMITAKA·Filed 2011·Granted Apr 21, 2015·0 cites·1 claims
- 4338US8321573B2Communications terminal with optimum send intervalHIRAO KEIJI·Filed 2005·Granted Nov 27, 2012·0 cites·14 claims
- 4438US2004198616A1Lubricating base stock for internal combustion engine oil and composition containing the sameFiled 2004·Application pending·0 cites
- 4532US2008126646A1ServerSAKANAKA MOTOE·Filed 2005·Application pending·0 cites
- 4631US5943303ADisk playback device and method of controlling the deviceSANYO ELECTRIC CO·Filed 1997·Granted Aug 24, 1999·1 cites·1 claims
- 4729US2001003287A1Fluid control apparatusARMSTRONG WESTERMAN HATTORI MC·Filed 1998·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →