Inventor · disambiguated record
Masami Igi
Also filed as: IGI MASAMI
19 granted patents·4 pending applications·109 citations·filing 1992–2006
93Inventor score
Top patents by PatentIndex Score
23 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
- 0291US6433196B1Production 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
- 0380US6433195B1Production methods of 5-phthalancarbonitrile compound and an intermediate thereforSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Aug 13, 2002·6 cites·2 claims
- 0480US5948914APiperidine derivative and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Sep 7, 1999·20 cites·2 claims
- 0579US6395910B2Production 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
- 0670US6476227B1Piperidine derivative and process for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Nov 5, 2002·3 cites·6 claims
- 0764US6815548B2Process for preparing a piperidine derivativeSUMIKA FINE CHEMICALS CO LTD·Filed 2003·Granted Nov 9, 2004·2 cites·4 claims
- 0864US6610851B1Process for preparing a piperidine derivativeSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Aug 26, 2003·2 cites·7 claims
- 0964US5389637A2-formylamino-6-halogenopurineSUMIKA FINE CHEMICALS CO LTD·Filed 1993·Granted Feb 14, 1995·6 cites·1 claims
- 1062US2006167285A1Production methods of citalopram and intermediates thereforSUMITOMO CHEMICAL CO·Filed 2006·Application pending·0 cites
- 1159US6977306B2Citalopram hydrobromide crystal and method for crystallization thereofSUMITOMO CHEMICAL CO·Filed 2001·Granted Dec 20, 2005·1 cites·17 claims
- 1255US6930211B2Production methods of citalopram and intermediates thereforSUMITOMO CHEMICAL CO·Filed 2003·Granted Aug 16, 2005·0 cites·6 claims
- 1354US2004230066A1Production method of citalopram, intermediate therefor and production method of the intermediateSUMIKA FINE CHEMICALS CO LTD·Filed 2004·Application pending·0 cites
- 1451US6946564B2Production method of an intermediate for citalopramSUMITOMO CHEMICAL CO·Filed 2003·Granted Sep 20, 2005·0 cites·1 claims
- 1551US2002151728A1Production methods of 5-phthalancarbonitrile compound and an intermediate thereforSUMIKA FINE CHEMICALS CO LTD·Filed 2002·Application pending·0 cites
- 1650US6090940AMethod for producing potassium oxonateSUMIKA FINE CHEMICALS CO LTD·Filed 1999·Granted Jul 18, 2000·6 cites·7 claims
- 1747US7119215B2Production method of citalopram, intermediate therefor and production method of the intermediateSUMITOMO CHEMICAL CO·Filed 2002·Granted Oct 10, 2006·0 cites·8 claims
- 1847US6316628B1L-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
- 1942US2002028944A1L-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
- 2039US6433168B1Highly 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
- 2138US6777576B2Production 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
- 2235US5440037AMethod for production of 2-amino-6-halogenopurine derivativesSUMIKA FINE CHEMICALS CO LTD·Filed 1994·Granted Aug 8, 1995·0 cites·5 claims
- 2334US5391733ASynthesis intermediates for 2-amino-6-halogenopurinesSUMIKA FINE CHEMICALS CO LTD·Filed 1992·Granted Feb 21, 1995·0 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →