Inventor
SEKO SHINZO
JP32 patents
⚠️ This page may combine multiple inventors who share the name “SEKO SHINZO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO CHEMICAL CO
30 patentsUS6297402B1Oct 2, 2001
Ketosulfone derivatives and process for producing the same
SUMITOMO CHEMICAL CO6 citations74
US6172265B1Jan 9, 2001
Ketosufone derivatives and process for producing the same
SUMITOMO CHEMICAL CO5 citations74
US6288283B1Sep 11, 2001
Process for producing retinal and intermediates for producing the same
SUMITOMO CHEMICAL CO7 citations73
US6211411B1Apr 3, 2001
Process for producing retinal and intermediate for producing the same
SUMITOMO CHEMICAL CO8 citations73
US5880291AMar 9, 1999
Process for producing optically active azetidine-2-carboxylic acid
SUMITOMO CHEMICAL CO6 citations73
US6388124B2May 14, 2002
Dihalo-compound and process for producing vitamin A derivative
SUMITOMO CHEMICAL CO3 citations63
US6348622B1Feb 19, 2002
Vitamin a related compounds and process for producing the same
SUMITOMO CHEMICAL CO3 citations63
US5969149AOct 19, 1999
Process for producing hexahydrothieno[3,4-D]imidazole-2,4-diones
SUMITOMO CHEMICAL CO2 citations63
US7977490B2Jul 12, 2011
Process for producing thiazole compound
SUMITOMO CHEMICAL CO2 citations62
US7439357B2Oct 21, 2008
Process for preparing thiazole by aminomethylation
SUMITOMO CHEMICAL CO3 citations62
US6660888B2Dec 9, 2003
Process for producing retinol and intermediate compounds for producing the same
SUMITOMO CHEMICAL CO3 citations62
US6444857B1Sep 3, 2002
Process for producing vitamin A aldehyde and intermediate for producing the same
SUMITOMO CHEMICAL CO2 citations62
US6355841B1Mar 12, 2002
Process for producing β-carotene
SUMITOMO CHEMICAL CO5 citations62
US6331652B1Dec 18, 2001
Process for producing lycopene and intermediate thereof
SUMITOMO CHEMICAL CO6 citations62
US5902905AMay 11, 1999
Method for producing arylvinylsulfone
SUMITOMO CHEMICAL CO4 citations62
US5756769AMay 26, 1998
Method for producing propargylamine compounds
SUMITOMO CHEMICAL CO6 citations62
US5466871ANov 14, 1995
Process for preparing nitroaniline derivatives
SUMITOMO CHEMICAL CO5 citations62
US5639895AJun 17, 1997
Process for producing β-nitroenamine
SUMITOMO CHEMICAL CO0 citations52
US5597940AJan 28, 1997
Process for producing β-nitroenamine
SUMITOMO CHEMICAL CO0 citations52
US5412106AMay 2, 1995
Process for production of 2-thiophene aldehydes
SUMITOMO CHEMICAL CO0 citations52
US6784321B2Aug 31, 2004
Process for producing retinol and intermediate compounds for producing the same
SUMITOMO CHEMICAL CO0 citations51
US6552219B1Apr 22, 2003
Process for the preparation of vitamin a, intermediates, and process for the preparation of the intermediates
SUMITOMO CHEMICAL CO0 citations51
US6160181ADec 12, 2000
Tetraene derivative and process for producing the same
SUMITOMO CHEMICAL CO1 citations51
US6114543ASep 5, 2000
Process for producing optically active azetidine-2-carboxylic acid
SUMITOMO CHEMICAL CO0 citations51
US6037509AMar 14, 2000
Process for producing 1-bromo-4-phenylbutane
SUMITOMO CHEMICAL CO1 citations50
US6806387B2Oct 19, 2004
Process for preparation of allyl sulfone derivatives and intermediates for the preparation
SUMITOMO CHEMICAL CO0 citations48
US7745669B2Jun 29, 2010
Process for production of alcohol compound
SUMITOMO CHEMICAL CO0 citations41
US7652170B2Jan 26, 2010
Method for producing primary amine compound
SUMITOMO CHEMICAL CO0 citations41
US7652177B2Jan 26, 2010
Process for production of alcohol compound
SUMITOMO CHEMICAL CO0 citations41
US5648496AJul 15, 1997
Process for producing aminonitropyridines
SUMITOMO CHEMICAL CO0 citations40