Inventor
KEGGENHOFF BERTHOLD
DE24 patents
⚠️ This page may combine multiple inventors who share the name “KEGGENHOFF BERTHOLD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAYER AG
15 patentsUS6719957B2Apr 13, 2004
Process for purification of anhydrous hydrogen chloride gas
BAYER AG89 citations96
US4915509AApr 10, 1990
Mixer for mixing at least two free-flowing substances, especially those which react during mixing
BAYER AG70 citations95
US5849947ADec 15, 1998
Process for the preparation of toluylene diisocyanate, specific mixtures of toluylene diamine and water, and the use of toluylene diamine and water mixtures to prepare toluylene diisocyanate
BAYER AG17 citations92
US4851571AJul 25, 1989
Process for the production of isocyanates
BAYER AG43 citations91
US7118653B2Oct 10, 2006
Process for the purification of mixtures of toluenediisocyanate incorporating a dividing-wall distillation column
BAYER AG41 citations90
US6359177B1Mar 19, 2002
Process for separating mixtures of materials having different boiling points
BAYER AG20 citations90
US7108770B2Sep 19, 2006
Process for the purification of toluene diisocyanate incorporating a dividing-wall distillation column for the final purification
BAYER AG19 citations86
US6472564B1Oct 29, 2002
Process for the preparation of toluylene diisocyanate, specific mixtures of toluylene diamine and water, and the use of toluylene diamine and water mixtures to prepare toluylene diisocyanate
BAYER AG14 citations83
US4299755ANov 10, 1981
Non-aqueous dispersions of water-soluble polymers
BAYER AG28 citations82
US4141806AFeb 27, 1979
Bulk photo polymerization process for esters of acrylic and methacrylic acids
BAYER AG21 citations82
US4774357ASep 27, 1988
Process for purifying polyisocyanates and the polyisocyanates thus purified
BAYER AG19 citations80
US4745216AMay 17, 1988
Process for the production of polyisocyanates
BAYER AG15 citations73
US4597909AJul 1, 1986
Process for the production of polyisocyanates
BAYER AG9 citations68
US4211751AJul 8, 1980
Use of an apparatus for continuous photopolymerization
BAYER AG5 citations61
US6984762B2Jan 10, 2006
Process for the two-step production of dinitrotoluene
BAYER AG3 citations59
BAYER MATERIALSCIENCE AG
5 patentsUS6936741B2Aug 30, 2005
Process for working up the waste water obtained in the preparation of dinitrotoluene
BAYER MATERIALSCIENCE AG61 citations95
US7312362B2Dec 25, 2007
Process for the production of di- and polyamines of the diphenylmethane series
BAYER MATERIALSCIENCE AG13 citations83
US7442835B2Oct 28, 2008
Process and apparatus for the production of phosgene
BAYER MATERIALSCIENCE AG15 citations81
US6953869B2Oct 11, 2005
Process for working up secondary components in the preparation of dinitrotoluene
BAYER MATERIALSCIENCE AG7 citations73
US7322565B2Jan 29, 2008
Stirring device and process for carrying out a gas-liquid reaction
BAYER MATERIALSCIENCE AG3 citations61