Assignee
SUMIKA FINE CHEMICALS CO LTD
US·51 granted patents·3 pending applications·345 citations·filing 1992–2004
Top patents by PatentIndex Score
54 records- 0195US6310222B1Production method of 5-phthalancarbonitrile compound, intermediate therefor and production method of the intermediateSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Oct 30, 2001·36 cites·7 claims
- 0292US6365745B1Method for producing hydrazine derivativeSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Apr 2, 2002·53 cites·10 claims
- 0391US6433196B1Production method of citalopram, intermediate therefor and production method of the intermediateSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Aug 13, 2002·19 cites·12 claims
- 0487US6730803B2Synthetic intermediate for epothilone derivative and production method thereofSUMIKA FINE CHEMICALS CO LTD·Filed 2002·Granted May 4, 2004·27 cites·28 claims
- 0581US6852862B2Process for producing quinoline-3-carboxylic acid compoundSUMIKA FINE CHEMICALS CO LTD·Filed 2002·Granted Feb 8, 2005·19 cites·11 claims
- 0681US6740770B2Crystal of bicalutamide and production method thereofSUMIKA FINE CHEMICALS CO LTD·Filed 2002·Granted May 25, 2004·13 cites·5 claims
- 0780US6552189B2Anhydrous mirtazapine crystals and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 2002·Granted Apr 22, 2003·10 cites·5 claims
- 0880US6433195B1Production methods of 5-phthalancarbonitrile compound and an intermediate thereforSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Aug 13, 2002·6 cites·2 claims
- 0980US5948914APiperidine derivative and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Sep 7, 1999·20 cites·2 claims
- 1079US6458975B1Production methods of citalopram and an intermediate thereforSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Oct 1, 2002·6 cites·4 claims
- 1179US6395910B2Production method of 5-phthalancarbonitrile compound, intermediate therefor and production method of the intermediateSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted May 28, 2002·5 cites·4 claims
- 1277US6495685B1Process for preparing piperazine derivativesSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Dec 17, 2002·10 cites·5 claims
- 1377US6376668B1Process for preparing pyridinemethanol compoundsSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Apr 23, 2002·16 cites·20 claims
- 1473US6350880B1Crystalline 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
- 1573US5621134AMethod for producing 4'-bromomethyl-2-cyanobiphenylSUMIKA FINE CHEMICALS CO LTD·Filed 1995·Granted Apr 15, 1997·15 cites·6 claims
- 1670US6723845B2Anhydrous mirtazapine crystals and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 2003·Granted Apr 20, 2004·4 cites·5 claims
- 1770US6476227B1Piperidine derivative and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Nov 5, 2002·3 cites·6 claims
- 1870US6455696B2Process for preparing 2,6-dichloropurineSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Sep 24, 2002·5 cites·16 claims
- 1966US6342603B1Purine derivatives having cyclopropane ringSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Jan 29, 2002·4 cites·1 claims
- 2064US6815548B2Process for preparing a piperidine derivativeSUMIKA FINE CHEMICALS CO LTD·Filed 2003·Granted Nov 9, 2004·2 cites·4 claims
- 2164US6610851B1Process for preparing a piperidine derivativeSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Aug 26, 2003·2 cites·7 claims
- 2264US6369266B1Process for producing tert-butyl 4′-methyl-2-biphenylcarboxlateSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Apr 9, 2002·3 cites·6 claims
- 2364US5389637A2-formylamino-6-halogenopurineSUMIKA FINE CHEMICALS CO LTD·Filed 1993·Granted Feb 14, 1995·6 cites·1 claims
- 2462US5892094AProcess for preparing 4'-methyl-2-cyanobiphenylSUMIKA FINE CHEMICALS CO LTD·Filed 1997·Granted Apr 6, 1999·8 cites·12 claims
- 2560US6437120B1Process for preparing pyridinemethanol compoundsSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Aug 20, 2002·2 cites·1 claims
- 2660US5902899AProcess for preparing 1, 3-disubstituted ureaSUMIKA FINE CHEMICALS CO LTD·Filed 1997·Granted May 11, 1999·8 cites·3 claims
- 2759US6660730B2Anhydrous mirtazapine and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Dec 9, 2003·2 cites·39 claims
- 2859US6333430B1Process for preparing tert-alkyl ester from carboxylic acidSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Dec 25, 2001·2 cites·4 claims
- 2958US6649768B1Production methods of imidazole compound and salt thereof and intermediates thereforSUMIKA FINE CHEMICALS CO LTD·Filed 2002·Granted Nov 18, 2003·1 cites·4 claims
- 3054US2004230066A1Production method of citalopram, intermediate therefor and production method of the intermediateSUMIKA FINE CHEMICALS CO LTD·Filed 2004·Application pending·0 cites
- 3152US5508446AMethod for producing alkyl 3-phthalidylideneacetateSUMIKA FINE CHEMICALS CO LTD·Filed 1994·Granted Apr 16, 1996·4 cites·10 claims
- 3251US5998652AProcess for preparing 2-cyanobiphenyl compoundSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Dec 7, 1999·4 cites·12 claims
- 3351US2002151728A1Production methods of 5-phthalancarbonitrile compound and an intermediate thereforSUMIKA FINE CHEMICALS CO LTD·Filed 2002·Application pending·0 cites
- 3450US6090940AMethod for producing potassium oxonateSUMIKA FINE CHEMICALS CO LTD·Filed 1999·Granted Jul 18, 2000·6 cites·7 claims
- 3547US6683207B2Production 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
- 3647US6316628B1L-tartrate of trans-(-)-4-(4-fluorophenyl)-3-hydroxymethylpiperidine compound and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 1999·Granted Nov 13, 2001·3 cites·5 claims
- 3747US6242608B12-phenylpyridine derivative and production method thereofSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Jun 5, 2001·0 cites·2 claims
- 3846US6268503B12-phenylpyridine derivative and production method thereofSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Jul 31, 2001·0 cites·5 claims
- 3945US6147218A2-phenylpyridine derivative and production method thereofSUMIKA FINE CHEMICALS CO LTD·Filed 1999·Granted Nov 14, 2000·2 cites·4 claims
- 4044US6541637B1Method for drying anhydrous paroxetine hydrochlorideSUMIKA FINE CHEMICALS CO LTD·Filed 1999·Granted Apr 1, 2003·8 cites·5 claims
- 4142US5914399AMethod for producing 5-isopropyluracilSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Jun 22, 1999·2 cites·5 claims
- 4242US2002028944A1L-tartrate of trans-(-)-4-(4-fluorophenyl)-3-hydroxymethylpiperidine compound and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Application pending·0 cites
- 4340US6187921B12-amino-6-chloropurine and method for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Feb 13, 2001·1 cites·2 claims
- 4439US6433168B1Highly pure phenothiazine compound, production method thereof, production method of intermediate therefor, and hydrate and novel crystal as starting materials for the intermediateSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Aug 13, 2002·0 cites·24 claims
- 4539US6376678B1Production method of hydrazine derivativeSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Apr 23, 2002·0 cites·15 claims
- 4638US6777576B2Production method of 2-cyclohexyl-2-hydroxy-2-phenylacetic acid intermediate therefor and production method thereofSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Aug 17, 2004·0 cites·26 claims
- 4738US6441187B1Method for producing camphorsultamSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Aug 27, 2002·0 cites·12 claims
- 4836US6096894AProduction method of 2-(p-alkylphenyl)pyridine compoundSUMIKA FINE CHEMICALS CO LTD·Filed 1999·Granted Aug 1, 2000·1 cites·2 claims
- 4935US6156892APurine derivatives having cyclopropane ringSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Dec 5, 2000·1 cites·10 claims
- 5035US5440037AMethod for production of 2-amino-6-halogenopurine derivativesSUMIKA FINE CHEMICALS CO LTD·Filed 1994·Granted Aug 8, 1995·0 cites·5 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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