Inventor
PIETSCH HARTMUT
DE12 patents
⚠️ This page may combine multiple inventors who share the name “PIETSCH HARTMUT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOECHST AG
8 patentsUS3969347AJul 13, 1976
Process for the manufacture of the potassium salt of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide
HOECHST AG7 citations73
US3968107AJul 6, 1976
Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide
HOECHST AG7 citations73
US3968106AJul 6, 1976
Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide and its use as sweetener
HOECHST AG7 citations73
US4322271AMar 30, 1982
Process for the preparation of N-vinyl-N-alkyl-carboxylic acid amides
HOECHST AG18 citations72
US4052453AOct 4, 1977
Process for preparing acetoacetamide-n-sulfofluoride
HOECHST AG2 citations62
US3969348AJul 13, 1976
Process for the manufacture of 6-methyl-3,4-dihydro-1,2,3-oxathiazin-4-one-2,2-dioxide
HOECHST AG4 citations62
US4009161AFeb 22, 1977
6-Methyl-2H-1,3-oxazin-2,4(3H)dione-3-sulfohalides
HOECHST AG0 citations51
US3993689ANov 23, 1976
β-Acyloxy-crotonic acid amide-N-sulfohalides and a process for their preparation
HOECHST AG0 citations51
METALLGESELLSCHAFT AG
4 patentsUS4775107AOct 4, 1988
Method of processing small batteries
METALLGESELLSCHAFT AG13 citations70
US4438076AMar 20, 1984
Method of extracting gold and silver from an ore
METALLGESELLSCHAFT AG18 citations68
US4436704AMar 13, 1984
Method of recovering uranium oxide from alkaline sodium uranyl carbonate solutions
METALLGESELLSCHAFT AG9 citations67
US4472359ASep 18, 1984
Method of pressure leaching
METALLGESELLSCHAFT AG6 citations57