Inventor
HOLLSTEIN ELMER J
US16 patents
⚠️ This page may combine multiple inventors who share the name “HOLLSTEIN ELMER J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUN CO INC R & M
7 patentsUS5214017AMay 25, 1993
Solid-acid alkylation catalyst compositions for alkylation processes
SUN CO INC R & M43 citations96
US5780383AJul 14, 1998
Solid superacid catalyst comprising group VII metal and having Ho less than -18
SUN CO INC R & M36 citations92
US5491278AFeb 13, 1996
Alkylation process using solid superacid catalyst liquid phase
SUN CO INC R & M25 citations92
US5321197AJun 14, 1994
Processes using solid-acid catalyst composition
SUN CO INC R & M37 citations92
US5212136AMay 18, 1993
Solid-acid alkylation catalyst compositions for alkylation processes
SUN CO INC R & M28 citations92
US5493067AFeb 20, 1996
Solid superacid alkylation catalyst compositions and alkylation method using the same
SUN CO INC R & M18 citations82
US5362694ANov 8, 1994
Sulfur dioxide regeneration of superacid catalyst
SUN CO INC R & M4 citations63
SUNTECH
5 patentsUS4353792AOct 12, 1982
Process to upgrade coal liquids by extraction prior to hydrodenitrogenation
SUNTECH7 citations72
US4272362AJun 9, 1981
Process to upgrade shale oil
SUNTECH10 citations72
US4192731AMar 11, 1980
Coal extraction process
SUNTECH7 citations72
US4107243AAug 15, 1978
Preparation of thermoplastic polymer fibrilla and fibril
SUNTECH13 citations72
US4229612AOct 21, 1980
Decolorization of norbornadiene dimers
SUNTECH7 citations70