Inventor · disambiguated record
Kenji Hirotsu
Also filed as: HIROTSU KENJI
24 granted patents·7 pending applications·33 citations·filing 1989–2015
92Inventor score
Top patents by PatentIndex Score
31 records- 0176US7232903B2Process for producing quinazolin-4-one and derivatives thereofUBE INDUSTRIES·Filed 2002·Granted Jun 19, 2007·7 cites·4 claims
- 0275US8133999B2Process for preparation of 6, 7-bis(2-methoxyethoxy) quinazolin-4-oneNISHINO SHIGEYOSHI·Filed 2009·Granted Mar 13, 2012·2 cites·6 claims
- 0374US8940946B2Method for producing high-purity 1,5-pentanediolUBE INDUSTRIES·Filed 2012·Granted Jan 27, 2015·1 cites·11 claims
- 0474US8318932B2Process for producing 4-aminoquinazoline compoundNISHINO SHIGEYOSHI·Filed 2009·Granted Nov 27, 2012·1 cites·11 claims
- 0572US6900335B2Process for producing 5-fluorooxindole and for producing intermediates thereforUBE INDUSTRIES·Filed 2001·Granted May 31, 2005·4 cites·20 claims
- 0670US5030755AProcess for producing substituted phenoxyethylamines and intermediatesUBE INDUSTRIES·Filed 1990·Granted Jul 9, 1991·10 cites·10 claims
- 0766US6653489B2Processes for producing tetrahydropyranyl-4-sulfonates and 4-aminotetrahydropyran compoundsUBE INDUSTRIES·Filed 2000·Granted Nov 25, 2003·3 cites·18 claims
- 0865US2008177069A1Process for producing 4-aminoquinazoline compoundUBE INDUSTRIES·Filed 2008·Application pending·0 cites
- 0958US9051234B2Method for producing alkanediolUBE INDUSTRIES·Filed 2012·Granted Jun 9, 2015·0 cites·9 claims
- 1057US9758623B2Polyimide precursor and polyimideUBE INDUSTRIES·Filed 2015·Granted Sep 12, 2017·0 cites·34 claims
- 1155US7342040B25-fluorooxindole-3-carboxylic acid esterUBE INDUSTRIES·Filed 2005·Granted Mar 11, 2008·0 cites·20 claims
- 1253US8293448B2Resin composition for stereolithographyITO TAKASHI·Filed 2007·Granted Oct 23, 2012·4 cites·4 claims
- 1353US8247583B23-ethyloxethane compound having hydroxyl group and method for producing the sameHIROTSU KENJI·Filed 2007·Granted Aug 21, 2012·0 cites·4 claims
- 1451US2006276647A1Process for producing 6, 7-bis (2-methoxyethoxy)-quinazolin-4-oneUBE INDUSTRIES·Filed 2004·Application pending·0 cites
- 1550US2005130995A1Process for producing 4-aminoquinazoline compoundUBE INDUSTRIES·Filed 2003·Application pending·0 cites
- 1648US7745649B2Processes for preparing tetrahydropyran-4-one and pyran-4-oneUBE INDUSTRIES·Filed 2004·Granted Jun 29, 2010·0 cites·23 claims
- 1748US7619084B2Process for preparing 4-aminopyrimidine compoundUBE INDUSTRIES·Filed 2005·Granted Nov 17, 2009·0 cites·13 claims
- 1848US2014066571A1Polyimide precursor and polyimideTAKASAWA RYOICHI·Filed 2012·Application pending·0 cites
- 1947US7741497B2Processes for preparing alkyl 3-(4-tetrahydropyranyl)-3-oxopropanoate compound and 4-acyltetrahydropyraneUBE INDUSTRIES·Filed 2004·Granted Jun 22, 2010·0 cites·13 claims
- 2046US7365215B2Process for preparing 4-aminotetrahydropyran compound and an acid salt thereof, synthetic intermediate thereof and process for preparing the sameUBE INDUSTRIES·Filed 2004·Granted Apr 29, 2008·0 cites·12 claims
- 2146US6841681B2Process for producing quinoline carboxyaldehyde derivative and intermediate thereofNISSAN CHEMICAL IND LTD·Filed 2002·Granted Jan 11, 2005·0 cites·8 claims
- 2245US7304169B2Process for producing tetrahydropyran-4-ol, intermediate therefor, and process for producing the sameUBE INDUSTRIES·Filed 2003·Granted Dec 4, 2007·0 cites·21 claims
- 2345US2008306287A1Process for Preparing Tetrahydropyran-4-Carboxylic Acid CompoundUBE INDUSTRIES·Filed 2005·Application pending·0 cites
- 2444US7300953B2Process for preparing nitrile compound, carboxylic acid compound or carboxylic acid ester compoundUBE INDUSTRIES·Filed 2004·Granted Nov 27, 2007·0 cites·5 claims
- 2542US6689895B24, 8-dodecadienedinitrile and process for its productionUBE INDUSTRIES·Filed 2001·Granted Feb 10, 2004·0 cites·5 claims
- 2641US2006270849A1Process for producing pyrimidin-4-one compoundNISHINO SHIGEYOSHI·Filed 2004·Application pending·0 cites
- 2740US8367824B2Process for producing quinazolin-4-one derivativeUBE INDUSTRIES·Filed 2003·Granted Feb 5, 2013·0 cites·7 claims
- 2838US7049458B2Process for producing β-ketonitrile compoundUBE INDUSTRIES·Filed 2001·Granted May 23, 2006·0 cites·8 claims
- 2938US4985596AProcess for producing substituted phenoxyethylamines oximeUBE INDUSTRIES·Filed 1989·Granted Jan 15, 1991·1 cites·23 claims
- 3037US2006173205A1Process for producing w-cyanoaldehyde compoundFUKUDA YASUHISA·Filed 2004·Application pending·0 cites
- 3133US8901254B2Process for preparing polycarbonate diol diacrylate and high-purity polycarbonate diol diacrylateYOSHIDA YOUICHI·Filed 2011·Granted Dec 2, 2014·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →