Inventor
HEITKAEMPER PETER
DE22 patents
⚠️ This page may combine multiple inventors who share the name “HEITKAEMPER PETER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAYER AG
20 patentsUS4388238AJun 14, 1983
Process for the preparation of N,O-disubstituted urethanes suitable as a starting material for the preparation of isocyanates
BAYER AG51 citations96
US4386033AMay 31, 1983
Process for the continuous thermal cleavage of carbamic acid esters and preparation of isocyanates from the products thereof
BAYER AG62 citations96
US6296908B1Oct 2, 2001
Stable adhesive composite material made of polyurethane and of another thermoplastic material, a process for its production and a method for its use in motor vehicles
BAYER AG38 citations92
US4480110AOct 30, 1984
Process for the preparation of urethanes
BAYER AG31 citations92
US4430505AFeb 7, 1984
Process for the preparation of N,O-disubstituted urethanes useful for the preparation of isocyanates
BAYER AG37 citations92
US4952701AAug 28, 1990
Preparation of 4-amino-1,2,4-triazol-5-ones
BAYER AG11 citations74
US4939170AJul 3, 1990
Substituted aminophenyl carbamates
BAYER AG9 citations74
US4888125ADec 19, 1989
Diisocyanates, a process for their production and their use in the production of polyurethane plastics
BAYER AG11 citations74
US4597910AJul 1, 1986
Bis-(4-isocyanatophenoxy)-alkanes and a process for the production thereof
BAYER AG11 citations74
US6428895B1Aug 6, 2002
Stable adhesive composite material made of polyurethane and of another thermoplastic material, a process for its production and a method for its use in motor vehicles
BAYER AG6 citations73
US5371271ADec 6, 1994
Pesticidal substituted aminophenyl carbamates
BAYER AG5 citations63
US5260474ANov 9, 1993
Pesticidal substituted aminophenyl carbamates
BAYER AG4 citations63
US4594441AJun 10, 1986
Process for the preparation of urethanes
BAYER AG5 citations63
US6784219B2Aug 31, 2004
Polyurethane cast elastomers based on durene diisocyanate
BAYER AG5 citations61
US4593117AJun 3, 1986
Process for the preparation of N- and O-substituted diurethanes and/or polyurethanes
BAYER AG5 citations60
US6054528AApr 25, 2000
Aqueous coating adhesive and sealant compositions containing oxadiazolinones and polyamines
BAYER AG0 citations52
US5130466AJul 14, 1992
Diisocyanate, a process for its production and its use
BAYER AG1 citations52
US4657940AApr 14, 1987
4,4'-diisocyanto-phenylbenzylether, a process for the preparation thereof and use in the production of polyurethane plastics
BAYER AG1 citations52
US5663439ASep 2, 1997
Process for the preparation of toluidines
BAYER AG0 citations51
US6486346B1Nov 26, 2002
Process for the preparation of durene diisocyanate
BAYER AG1 citations50