Inventor
GRECO NICHOLAS P
US14 patents
Patents
14 patentsUS4431848AFeb 14, 1984
Preparation of resorcinol and substituted resorcinols by liquid-phase dehydrogenation of 1,3-cyclic diones derived by vapor-phase cyclization of delta-keto carboxylic acid esters
KOPPERS CO INC7 citations72
US4215229AJul 29, 1980
Process for alkylating phenolic compounds to produce ortho- and para-monoalkylated phenols and 2,4- and 2,6-dialkylated phenols
KOPPERS CO INC15 citations72
US3953509AApr 27, 1976
Hydrogenation of nitrobenzene to p-aminophenol
KOPPERS CO INC12 citations72
US3937741AFeb 10, 1976
Production of hydroquinone
KOPPERS CO INC7 citations72
US3933925AJan 20, 1976
Hydrolysis of toluene diamines to produce methyl resorcinols
KOPPERS CO INC17 citations72
US3973971AAug 10, 1976
Method for preparing an improved creosote wood preservative from a coal tar creosote
KOPPERS CO INC6 citations62
US3960969AJun 1, 1976
Method for preparing an improved creosote wood preservative from a coal tar creosote by the use of caustic compounds
KOPPERS CO INC6 citations62
US4633022ADec 30, 1986
Process for preparation of trisubstituted phenols
KOPPERS CO INC3 citations61
US4443636AApr 17, 1984
Refining lurgi tar acids
KOPPERS CO INC3 citations61
US4399310AAug 16, 1983
Preparation of 1,3-cyclic diones by vapor phase cyclization of delta-keto carboxylic acid esters utilizing carrier condensable under ambient conditions
KOPPERS CO INC4 citations61
US4275246AJun 23, 1981
Separation of phenols
KOPPERS CO INC2 citations61
US3984466AOct 5, 1976
Hydrolysis of 3,5-diamino benzoic acid to produce alpha-resorcylic acid
KOPPERS CO INC2 citations61
US4769230ASep 6, 1988
Process for preparation of arsenic acid
KOPPERS CO INC2 citations56
US3935283AJan 27, 1976
Production of hydroquinone
KOPPERS CO INC1 citations51