Inventor · disambiguated record
Tadashi Katsura
Also filed as: KATSURA TADASHI
25 granted patents·1 pending application·147 citations·filing 1979–2008
95Inventor score
Top patents by PatentIndex Score
26 records- 0190US4536599ASynthesis of amine derivativesSUMITOMO CHEMICAL CO·Filed 1979·Granted Aug 20, 1985·27 cites·2 claims
- 0281US6740770B2Crystal of bicalutamide and production method thereofSUMIKA FINE CHEMICALS CO LTD·Filed 2002·Granted May 25, 2004·13 cites·5 claims
- 0380US5948914APiperidine derivative and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Sep 7, 1999·20 cites·2 claims
- 0474US4665174AProduction of cyclopentenone derivativesSUMITOMO CHEMICAL CO·Filed 1982·Granted May 12, 1987·16 cites·9 claims
- 0573US6350880B1Crystalline or crystallized acid addition salt of losartan and purification method of losartanSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Feb 26, 2002·6 cites·6 claims
- 0673US5621134AMethod for producing 4'-bromomethyl-2-cyanobiphenylSUMIKA FINE CHEMICALS CO LTD·Filed 1995·Granted Apr 15, 1997·15 cites·6 claims
- 0772US7132560B2Crystal of bicalutamide and production method thereofSUMITOMO CHEMICAL CO·Filed 2003·Granted Nov 7, 2006·5 cites·33 claims
- 0870US6476227B1Piperidine derivative and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Nov 5, 2002·3 cites·6 claims
- 0964US6815548B2Process for preparing a piperidine derivativeSUMIKA FINE CHEMICALS CO LTD·Filed 2003·Granted Nov 9, 2004·2 cites·4 claims
- 1064US6610851B1Process for preparing a piperidine derivativeSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Aug 26, 2003·2 cites·7 claims
- 1164US6369266B1Process for producing tert-butyl 4′-methyl-2-biphenylcarboxlateSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Apr 9, 2002·3 cites·6 claims
- 1263US4511655AProcess for producing 4-cyclopentenonesSUMITOMO CHEMICAL CO·Filed 1982·Granted Apr 16, 1985·6 cites·11 claims
- 1362US8288579B2Method for producing N-methacryloyl-4-cyano-3-trifluoromethylanilineKATSURA TADASHI·Filed 2008·Granted Oct 16, 2012·1 cites·3 claims
- 1462US5892094AProcess for preparing 4'-methyl-2-cyanobiphenylSUMIKA FINE CHEMICALS CO LTD·Filed 1997·Granted Apr 6, 1999·8 cites·12 claims
- 1559US6333430B1Process for preparing tert-alkyl ester from carboxylic acidSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Dec 25, 2001·2 cites·4 claims
- 1659US4496767AProcess for preparing 2-cyclopentenone derivativesSUMITOMO CHEMICAL CO·Filed 1983·Granted Jan 29, 1985·5 cites·13 claims
- 1754US7132548B2Process for recovering 1,3-dimethyl-2-imidazolidinoneSUMITOMO CHEMICAL CO·Filed 2005·Granted Nov 7, 2006·0 cites·4 claims
- 1854US4542235AMethod for producing an optically active 2,2-dimethylcyclopropanecarboxylic acidSUMITOMO CHEMICAL CO·Filed 1983·Granted Sep 17, 1985·4 cites·7 claims
- 1951US5998652AProcess for preparing 2-cyanobiphenyl compoundSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Dec 7, 1999·4 cites·12 claims
- 2050US7632971B2Method of crystallization of bicalutamideSUMITOMO CHEMICAL CO·Filed 2005·Granted Dec 15, 2009·0 cites·10 claims
- 2150US4729953AOptically active 4-hydroxy-2-cyclopentenones, and their productionSUMITOMO CHEMICAL CO·Filed 1984·Granted Mar 8, 1988·3 cites·27 claims
- 2249US7038075B2Production method of racemic 3-hydroxy-3-(2-phenylethyl)hexanoic acid C1-6 alkyl esterSUMITOMO CHEMICAL CO·Filed 2003·Granted May 2, 2006·0 cites·6 claims
- 2347US6683207B2Production method of (R)-3 hydroxy-3-(2-phenylethyl) hexanoic acid and intermediate thereofSUMIKA FINE CHEMICALS CO LTD·Filed 2002·Granted Jan 27, 2004·0 cites·18 claims
- 2445US4535182AProcess for preparing 2-cyclopentenone estersSUMITOMO CHEMICAL CO·Filed 1983·Granted Aug 13, 1985·2 cites·9 claims
- 2542US2006183934A1Process for producing bicalutamide and method of purifying intermediate thereofSUMITOMO CHEMICAL CO·Filed 2006·Application pending·0 cites
- 2634US4608442AProcess for preparing 4-hydroxy-2-cyclopentenonesSUMITOMO CHEMICAL CO·Filed 1984·Granted Aug 26, 1986·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →