Inventor
HELMRICH HARALD
DE6 patents
⚠️ This page may combine multiple inventors who share the name “HELMRICH HARALD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
METALLGESELLSCHAFT AG
4 patentsUS4895989AJan 23, 1990
Process for producing alkali metal alcoholates
METALLGESELLSCHAFT AG42 citations90
US5183571AFeb 2, 1993
Multilayer membrane and process of manufacturing the same
METALLGESELLSCHAFT AG22 citations88
US5164088ANov 17, 1992
Multilayer membrane and process of manufacturing same
METALLGESELLSCHAFT AG9 citations68
US5849195ADec 15, 1998
Composite membrane, process of manufacturing it and process of using it
METALLGESELLSCHAFT AG12 citations65