Inventor
HOSAKA HIROKAZU
12 patents
Patents
12 patentsUS4308110ADec 29, 1981
Process for separation and purification of dihydric phenols
SUMITOMO CHEMICAL CO21 citations80
US4336109AJun 22, 1982
Method for the recovery of acetone
SUMITOMO CHEMICAL CO8 citations72
US3953521AApr 27, 1976
Process for the continuous production of dihydroperoxides
SUMITOMO CHEMICAL CO12 citations72
US3950431AApr 13, 1976
Process for removing impurities in an oxidation mixture
SUMITOMO CHEMICAL CO7 citations72
US3933921AJan 20, 1976
Process for the production of hydroperoxides
SUMITOMO CHEMICAL CO14 citations72
US4059637ANov 22, 1977
Method for extraction of dihydroperoxide
SUMITOMO CHEMICAL CO7 citations70
US4021495AMay 3, 1977
Purification of β-naphthol
SUMITOMO CHEMICAL CO6 citations62
US3969420AJul 13, 1976
Process for recovering resorcinol and hydroquinone in mixture
SUMITOMO CHEMICAL CO4 citations61
US3932528AJan 13, 1976
Process for the separation of dihydroperoxides
SUMITOMO CHEMICAL CO5 citations61
US4032581AJun 28, 1977
Method for separation of m- or p-cresol
SUMITOMO CHEMICAL CO2 citations60
US4049720ASep 20, 1977
Process for producing β-isopropyl-naphthalene hydroperoxide
SUMITOMO CHEMICAL CO1 citations51
US4044052AAug 23, 1977
Process for recovery of urea from its phenolic solution
SUMITOMO CHEMICAL CO0 citations50