Inventor

SIEGFRIED THEODOR

CH6 patents

⚠️ This page may combine multiple inventors who share the name “SIEGFRIED THEODOR”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HOFFMANN LA ROCHE

3 patents

US5543559AAug 6, 1996

Process for the enantioselective hydrogenation of ketosiophorone derivatives

HOFFMANN LA ROCHE10 citations72

US5041563AAug 20, 1991

Rearrangement process

HOFFMANN LA ROCHE11 citations65

US5502236AMar 26, 1996

Method for the production of (3-alkoxycarbonyl-2-butenyl)triphenylphosphonium salts

HOFFMANN LA ROCHE3 citations60

ROCHE VITAMINS INC

3 patents

US5681977AOct 28, 1997

Method for the production of (3-alkoxycarbonyl-2-butenyl) triphenylphosphonium salts

ROCHE VITAMINS INC2 citations60

US5631398AMay 20, 1997

Method for the production of (3-alkoxycarbonyl-2-butenyl) triphenylphosphonium salts

ROCHE VITAMINS INC1 citations60

US5777149AJul 7, 1998

Method for the production of (3-alkoxycarbonyl-2-butenyl) triphenylphosphonium salts

ROCHE VITAMINS INC0 citations49