Friedrich-Wilhelm Kupper — 8 Patents at Huels Aktiengesellschaft

Friedrich-Wilhelm Kupper has been granted 8 US patents while listed as an inventor at Huels Aktiengesellschaft. The first was granted in 1984 and the most recent in March 1994. Friedrich-Wilhelm Kupper ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Friedrich-Wilhelm Kupper in Marl, DE.

Patents per Year

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #	Title	Co-Inventors	Date
5292970	Method of manufacturing ortho-substituted alkylphenols, and catalyst therefor	Wolfgang Muller	1994-03-08
5284982	Method for the cyclooligomerization of 3-hydroxy-1 alkynes	Wolfgang Schröder, Heinz-Werner Voges	1994-02-08
5091594	Process for the production of 2,6-di-tert-butylphenol	Wolfgang Muller, Alfred Oberholz	1992-02-25
4912249	Esters of 3-tert-butyl or 3-tert-butyl-5-alkyl-4-hydroxylphenyl(alkane) carboxylic acids	Heinz-Werner Voges, Werner Patzold, Richard Schaaf	1990-03-27
4906775	Esters of 3-tert-butyl- and 3-tert-butyl-5-alkyl-4-hydroxyphenyl (alkane) carboxylic acids with oxyethylates of polythiols	Heinz-Werner Voges, Hans-Jurgen Haage	1990-03-06
4859790	Esters of 3-tert-butyl- and 3-tert-butyl-5-alkyl-4-hydroxyphenyl (alkane) carboxylic acids with oxethylates of polyhydroxyaromatics, process for their production, and their use as stabilizers	Heinz-Werner Voges, Werner Patzold, Richard Schaaf	1989-08-22
4581414	Transparent, impact-resistant molding compositions based on polyvinyl chloride	Bernhard Stutzel, Alfred Oberholz, Alfred Wieland	1986-04-08
4433099	Production of impact-resistant styrene polymers	Gunter Padberg, Ulrich Reichert, Walter Trautmann	1984-02-21