Inventor · disambiguated record
Berthold Keggenhoff
Also filed as: BANDTEL EBERHARD · KEGGENHOFF BERTHOLD
24 granted patents·5 pending applications·525 citations·filing 1977–2010
96Inventor score
Files withBAYER AG15BAYER MATERIALSCIENCE AG8BAYER MATERIALSCIENCE LLC2KEGGENHOFF BERTHOLD2BULAN ANDREAS1
Top patents by PatentIndex Score
29 records- 0195US6719957B2Process for purification of anhydrous hydrogen chloride gasBAYER AG·Filed 2002·Granted Apr 13, 2004·89 cites·14 claims
- 0293US6936741B2Process for working up the waste water obtained in the preparation of dinitrotolueneBAYER MATERIALSCIENCE AG·Filed 2004·Granted Aug 30, 2005·61 cites·10 claims
- 0392US7118653B2Process for the purification of mixtures of toluenediisocyanate incorporating a dividing-wall distillation columnBAYER AG·Filed 2003·Granted Oct 10, 2006·41 cites·9 claims
- 0491US8153838B2Process for producing isocyanatesBULAN ANDREAS·Filed 2008·Granted Apr 10, 2012·11 cites·25 claims
- 0591US7312362B2Process for the production of di- and polyamines of the diphenylmethane seriesBAYER MATERIALSCIENCE AG·Filed 2007·Granted Dec 25, 2007·13 cites·5 claims
- 0691US4915509AMixer for mixing at least two free-flowing substances, especially those which react during mixingBAYER AG·Filed 1988·Granted Apr 10, 1990·70 cites·8 claims
- 0788US6359177B1Process for separating mixtures of materials having different boiling pointsBAYER AG·Filed 2000·Granted Mar 19, 2002·20 cites·9 claims
- 0887US7442835B2Process and apparatus for the production of phosgeneBAYER MATERIALSCIENCE AG·Filed 2005·Granted Oct 28, 2008·15 cites·8 claims
- 0985US7108770B2Process for the purification of toluene diisocyanate incorporating a dividing-wall distillation column for the final purificationBAYER AG·Filed 2003·Granted Sep 19, 2006·19 cites·10 claims
- 1083US4774357AProcess for purifying polyisocyanates and the polyisocyanates thus purifiedBAYER AG·Filed 1984·Granted Sep 27, 1988·19 cites·9 claims
- 1181US4299755ANon-aqueous dispersions of water-soluble polymersBAYER AG·Filed 1980·Granted Nov 10, 1981·28 cites·4 claims
- 1280US4141806ABulk photo polymerization process for esters of acrylic and methacrylic acidsBAYER AG·Filed 1977·Granted Feb 27, 1979·21 cites·4 claims
- 1379US4745216AProcess for the production of polyisocyanatesBAYER AG·Filed 1985·Granted May 17, 1988·15 cites·18 claims
- 1478US5849947AProcess 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 diisocyanateBAYER AG·Filed 1996·Granted Dec 15, 1998·17 cites·7 claims
- 1578US4851571AProcess for the production of isocyanatesBAYER AG·Filed 1988·Granted Jul 25, 1989·43 cites·8 claims
- 1676US6472564B1Process 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 diisocyanateBAYER AG·Filed 1998·Granted Oct 29, 2002·14 cites·23 claims
- 1773US7322565B2Stirring device and process for carrying out a gas-liquid reactionBAYER MATERIALSCIENCE AG·Filed 2005·Granted Jan 29, 2008·3 cites·18 claims
- 1863US4597909AProcess for the production of polyisocyanatesBAYER AG·Filed 1985·Granted Jul 1, 1986·9 cites·5 claims
- 1961US6984762B2Process for the two-step production of dinitrotolueneBAYER AG·Filed 2004·Granted Jan 10, 2006·3 cites·7 claims
- 2061US6953869B2Process for working up secondary components in the preparation of dinitrotolueneBAYER MATERIALSCIENCE AG·Filed 2004·Granted Oct 11, 2005·7 cites·7 claims
- 2151US2007012577A1Process for producing isocyanatesSTARCK H C GMBH·Filed 2006·Application pending·0 cites
- 2250US2007265465A1Process for the production of isocyanatesBAYER MATERIALSCIENCE AG·Filed 2007·Application pending·0 cites
- 2349US7555917B2Process for purification of anhydrous hydrogen chloride gasBAYER MATERIALSCIENCE LLC·Filed 2004·Granted Jul 7, 2009·1 cites·1 claims
- 2448US2010298596A1Process for the production of isocyanatesBAYER MATERIALSCIENCE AG·Filed 2010·Application pending·0 cites
- 2545US7122701B2Process for preparing aromatic aminesBAYER MATERIALSCIENCE LLC·Filed 2003·Granted Oct 17, 2006·1 cites·6 claims
- 2645US4211751AUse of an apparatus for continuous photopolymerizationBAYER AG·Filed 1978·Granted Jul 8, 1980·5 cites·5 claims
- 2743US10143987B2Method for dividing fluid streamsKEGGENHOFF BERTHOLD·Filed 2009·Granted Dec 4, 2018·0 cites·9 claims
- 2843US2007117997A1Process for the production of 4,4'-diphenylmethane diisocyanateBAYER MATERIALSCIENCE AG·Filed 2006·Application pending·0 cites
- 2930US2008275269A1Process for the preparation of 4,4'-diphenylmethane diisocyanateKEGGENHOFF BERTHOLD·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →