Inventor
SCHAAFSMA SIJBRANDUS E
6 patents
Patents
6 patentsUS4264501AApr 28, 1981
Process for the recovery of pyrrolidone-2
STAMICARBON8 citations71
US4012418AMar 15, 1977
Process for the preparation of pyrrolidone-2
STAMICARBON12 citations70
US3950438AApr 13, 1976
Preparation of resorcinol and alkyl-substituted derivatives thereof
STAMICARBON11 citations69
US3932511AJan 13, 1976
Preparation of cyclohexane-1,3-dione and of alkyl-substituted derivatives thereof
STAMICARBON15 citations69
US4016175AApr 5, 1977
Preparation of a 2-amino-pyrroline derivative
STAMICARBON5 citations59
US4291170ASep 22, 1981
Preparation of delta-keto-esters
STAMICARBON2 citations55