Inventor
HETZEL HARTMUT
DE14 patents
⚠️ This page may combine multiple inventors who share the name “HETZEL HARTMUT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAYER AG
13 patentsUS4051212ASep 27, 1977
Process for the continuous degradation of plastics
BAYER AG56 citations95
US4241043ADec 23, 1980
Method for evaporating solvents and reacting components in compound mixtures
BAYER AG34 citations92
US4147714AApr 3, 1979
Process for the preparation of polyisocyanates which contain biuret groups
BAYER AG44 citations92
US5563296AOct 8, 1996
Continuous process for preparing aromatic amines
BAYER AG35 citations91
US4482750ANov 13, 1984
Process for removing alkaline catalysts from polyether polyols
BAYER AG29 citations87
US4143072AMar 6, 1979
Process for the purification of polyethers using a tubular coil evaporator
BAYER AG26 citations80
US4992171AFeb 12, 1991
Filtering device with agitator
BAYER AG7 citations73
US4136967AJan 30, 1979
Screw machine for the continuous degradation of plastics
BAYER AG13 citations73
US5609735AMar 11, 1997
Process and a device for separating a solid residue from its solution in a stirred bed of material
BAYER AG13 citations72
US3993641ANov 23, 1976
Process for the production of polyisocyanates containing uretdione groups
BAYER AG11 citations72
US6271414B1Aug 7, 2001
Process for the isomeric separation of isocyanates
BAYER AG6 citations69
US5817211AOct 6, 1998
Process and device for continuous evaporation to dryness of viscous solutions and suspensions with a tendency to stick
BAYER AG6 citations62
US4399236AAug 16, 1983
Process for separating polyurethane hydrolyzates into polyether and diamine
BAYER AG6 citations60