WS

Wilfried Seyfert

Basf Se: 7 patents #2,439 of 13,826Top 20%
Overall (All Time): #754,162 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7230130 Process for preparing methylenedianiline and methylenebis (phenylisocyanate) Eckhard Ströfer, Jan Jacobs, Hans Volkmar Schwarz, Olaf Schweers, Volker Scharr +1 more 2007-06-12
6831192 Process for preparing methylenedianiline and methylenebis(phenyl isocyanate) Eckhard Ströfer, Jan Jacobs, Hans Volkmar Schwarz, Olaf Schweers, Volker Scharr +1 more 2004-12-14
6433219 Method for the production of methylenedi(phenylamine and methylenedi(phenyl isocyanate) Eckhard Ströfer, Jan Jacobs, Hans Volkmar Schwarz, Olaf Schweers, Volker Scharr +1 more 2002-08-13
6229043 Preparation of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having a reduced iodine color number and a reduced chlorine content Dietrich Scherzer, Bernd Bruchmann, Roland Minges, Peter Keller, Willy van Pee +4 more 2001-05-08
5159107 Continuous preparation of alkyl pentenoates Paul Panitz, Heinrich Reitz, Gunter Schuch 1992-10-27
4946029 Purification of carboxylic esters which contain aldehydes, acetals and/or unsaturated compounds Gerhard Frank, Hubert Lendle, Peter Stops 1990-08-07
4810798 Recovery of pyridine or methylpyridines or mixtures thereof from methyl butanedicarboxylate containing reaction mixtures Hubert Lendle, Paul Panitz, Peter Stops 1989-03-07