Inventor
IGI MASAMI
JP20 patents
⚠️ This page may combine multiple inventors who share the name “IGI MASAMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMIKA FINE CHEMICALS CO LTD
16 patentsUS6310222B1Oct 30, 2001
Production method of 5-phthalancarbonitrile compound, intermediate therefor and production method of the intermediate
SUMIKA FINE CHEMICALS CO LTD36 citations96
US6433196B1Aug 13, 2002
Production method of citalopram, intermediate therefor and production method of the intermediate
SUMIKA FINE CHEMICALS CO LTD19 citations90
US5948914ASep 7, 1999
Piperidine derivative and process for preparing the same
SUMIKA FINE CHEMICALS CO LTD20 citations90
US6458975B1Oct 1, 2002
Production methods of citalopram and an intermediate therefor
SUMIKA FINE CHEMICALS CO LTD6 citations73
US6433195B1Aug 13, 2002
Production methods of 5-phthalancarbonitrile compound and an intermediate therefor
SUMIKA FINE CHEMICALS CO LTD6 citations73
US6395910B2May 28, 2002
Production method of 5-phthalancarbonitrile compound, intermediate therefor and production method of the intermediate
SUMIKA FINE CHEMICALS CO LTD5 citations73
US5389637AFeb 14, 1995
2-formylamino-6-halogenopurine
SUMIKA FINE CHEMICALS CO LTD6 citations72
US6090940AJul 18, 2000
Method for producing potassium oxonate
SUMIKA FINE CHEMICALS CO LTD6 citations65
US6316628B1Nov 13, 2001
L-tartrate of trans-(-)-4-(4-fluorophenyl)-3-hydroxymethylpiperidine compound and process for preparing the same
SUMIKA FINE CHEMICALS CO LTD3 citations61
US6815548B2Nov 9, 2004
Process for preparing a piperidine derivative
SUMIKA FINE CHEMICALS CO LTD2 citations60
US6610851B1Aug 26, 2003
Process for preparing a piperidine derivative
SUMIKA FINE CHEMICALS CO LTD2 citations60
US6476227B1Nov 5, 2002
Piperidine derivative and process for preparing the same
SUMIKA FINE CHEMICALS CO LTD3 citations60
US6433168B1Aug 13, 2002
Highly pure phenothiazine compound, production method thereof, production method of intermediate therefor, and hydrate and novel crystal as starting materials for the intermediate
SUMIKA FINE CHEMICALS CO LTD0 citations51
US5440037AAug 8, 1995
Method for production of 2-amino-6-halogenopurine derivatives
SUMIKA FINE CHEMICALS CO LTD0 citations51
US5391733AFeb 21, 1995
Synthesis intermediates for 2-amino-6-halogenopurines
SUMIKA FINE CHEMICALS CO LTD0 citations51
US6777576B2Aug 17, 2004
Production method of 2-cyclohexyl-2-hydroxy-2-phenylacetic acid intermediate therefor and production method thereof
SUMIKA FINE CHEMICALS CO LTD0 citations49
SUMITOMO CHEMICAL CO
4 patentsUS6977306B2Dec 20, 2005
Citalopram hydrobromide crystal and method for crystallization thereof
SUMITOMO CHEMICAL CO1 citations52
US6946564B2Sep 20, 2005
Production method of an intermediate for citalopram
SUMITOMO CHEMICAL CO0 citations52
US6930211B2Aug 16, 2005
Production methods of citalopram and intermediates therefor
SUMITOMO CHEMICAL CO0 citations52
US7119215B2Oct 10, 2006
Production method of citalopram, intermediate therefor and production method of the intermediate
SUMITOMO CHEMICAL CO0 citations49