Inventor · disambiguated record
Kenji Hirai
Also filed as: HIRAI KENJI
29 granted patents·1 pending application·122 citations·filing 1982–2017
95Inventor score
Top patents by PatentIndex Score
30 records- 0190US7863460B2Process for producing 1-substituted-3-fluoroalkylpyrazole-4-carboxylateSAGAMI CHEM RES·Filed 2006·Granted Jan 4, 2011·15 cites·6 claims
- 0278US11439721B2Aldehyde scavenger and method for removing aldehydesTOSOH CORP·Filed 2017·Granted Sep 13, 2022·2 cites·16 claims
- 0378US5198013ABenzoxazinone compounds and herbicidal composition containing the sameSAGAMI CHEM RES·Filed 1989·Granted Mar 30, 1993·13 cites·9 claims
- 0465US4621150ACatalyst and method for isomerizationSAGAMI CHEM RES·Filed 1985·Granted Nov 4, 1986·20 cites·9 claims
- 0564US5028738AProcess for producing 2-oxo-3-aromatic carboxylic acid derivativesSAGAMI CHEM RES·Filed 1989·Granted Jul 2, 1991·7 cites·13 claims
- 0663US4902337AHerbicidal hydantoin derivativesSAGAMI CHEM RES·Filed 1987·Granted Feb 20, 1990·6 cites·4 claims
- 0763US4849345AL-phenylalanine dehydrogenase and use thereofSAGAMI CHEM RES·Filed 1986·Granted Jul 18, 1989·12 cites·19 claims
- 0862US4818272AOxazolidinedione derivatives, method of producing the derivatives, and herbicides containing the derivativesSAGAMI CHEM RES·Filed 1986·Granted Apr 4, 1989·6 cites·4 claims
- 0959US7700786B2Pyrazole derivative, intermediate therefor, processes for producing these, and herbicide containing these as active ingredientSAGAMI CHEM RES·Filed 2002·Granted Apr 20, 2010·2 cites·8 claims
- 1058US5886211AProcess for producing 2-(halomethyl)phenylacetic acid estersSAGAMI CHEM RES·Filed 1996·Granted Mar 23, 1999·8 cites·12 claims
- 1157US4497964AProcess for production of N-acyl-α-amino acidsSAGAMI CHEM RES·Filed 1982·Granted Feb 5, 1985·13 cites·15 claims
- 1253US4983751AOxazolidinedione derivatives, method of producing the derivatives, and herbicides containing the derivativesSAGAMI CHEM RES·Filed 1989·Granted Jan 8, 1991·3 cites·1 claims
- 1349US7767827B2Pyrazole-1-carboxylate derivatives, process for the production thereof and process for the production of pyrazole derivativesKAKEN PHARMA CO LTD·Filed 2006·Granted Aug 3, 2010·0 cites·7 claims
- 1448US5053557AProcess for preparing 2-chloro-4-fluorophenolSAGAMI CHEM RES·Filed 1990·Granted Oct 1, 1991·3 cites·9 claims
- 1544US5100457AOxazolidinedione compounds, the process for preparing the same and herbicidal composition containing the sameSAGAMI CHEM RES·Filed 1991·Granted Mar 31, 1992·2 cites·4 claims
- 1644US2010152443A1Pyrazole derivative, intermediate therefor, processes for producing these, and herbicide containing these as active ingredientSAGAMI CHEM RES·Filed 2010·Application pending·0 cites
- 1741US5612289A4-imino-oxazolidine-2-one derivatives, a process for producing such derivatives and a herbicide containing them as an active ingredientSAGAMI CHEM RES·Filed 1994·Granted Mar 18, 1997·2 cites·11 claims
- 1840US5506190ATetrahydrophthalamide derivative, intermediate for producing the same, production of both, and herbicide containing the same as active ingredientSAGAMI CHEM RES·Filed 1993·Granted Apr 9, 1996·2 cites·4 claims
- 1938US5424277ABenzene derivatives substituted with heterocyclic ring, and herbicides containing same as active ingredientsSAGAMI CHEM RES·Filed 1991·Granted Jun 13, 1995·1 cites·4 claims
- 2036US5464811ABenzene derivatives substituted with heterocyclic ring and herbicides containing same as active ingredientsSAGAMI CHEM RES·Filed 1995·Granted Nov 7, 1995·1 cites·4 claims
- 2134US6548511B1Insecticidal/acaricidal agentsSAGAMI CHEM RES·Filed 1998·Granted Apr 15, 2003·3 cites·18 claims
- 2233US5391807AMethods of preparing fluorobenzene derivatives and related compoundsSAGAMI CHEM RES·Filed 1994·Granted Feb 21, 1995·0 cites·4 claims
- 2333US5344953AFluorobenzene derivativesSAGAMI CHEM RES·Filed 1993·Granted Sep 6, 1994·0 cites·2 claims
- 2432US5883049AHydantoin derivatives and herbicides containing said derivatives as active ingredientSAGAMI CHEM RES·Filed 1995·Granted Mar 16, 1999·1 cites·2 claims
- 2532US5281742ABis(fluorophenyl) carbonate derivativesSAGAMI CHEM RES·Filed 1992·Granted Jan 25, 1994·0 cites·4 claims
- 2630US9580444B2Polycyclic pyrazolinone derivative and herbicide comprising same as effective component thereofSAGAMI CHEMICAL RES INST·Filed 2014·Granted Feb 28, 2017·0 cites·12 claims
- 2729US5024692AHerbicidal composition and herbicidal methodKAKEN PHARMA CO LTD·Filed 1989·Granted Jun 18, 1991·0 cites·8 claims
- 2828US5639915AProcess for the production of aniline derivativesSAGAMI CHEM RES·Filed 1993·Granted Jun 17, 1997·0 cites·3 claims
- 2926US5554581ATetrahydrophthalamide derivative, intermediate for producing the same, production of both, and herbicide containing the same as active ingredientSAGAMI CHEM RES·Filed 1995·Granted Sep 10, 1996·0 cites·4 claims
- 3021US6090946AProcess for the preparation of 3-(substituted phenyl)-5-alkylidene-1,3-oxazolidine-2,4-dione derivativesSAGAMI CHEM RES·Filed 1996·Granted Jul 18, 2000·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →