Wolfgang Knaup has been granted 13 US patents while listed as an inventor at Hoechst Gmbh . The first was granted in 1991 and the most recent in July 2021. Wolfgang Knaup ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Wolfgang Knaup in Altötting, DE.
Patents per Year Patents granted per year, 1991 to 2021 Bar chart with a peak of 3 patents in 1992. peak 3 1991: 1 patents 1991 1992: 3 patents 1992 1993: 1 patents 1993 1997: 2 patents 1997 1998: 1 patents 1998 2003: 1 patents 2003 2011: 1 patents 2011 2019: 1 patents 2019 2020: 1 patents 2020 2021: 1 patents 2021 Issued Patents All Time
Showing 1–13 of 13 patents
Patent # Title Co-Inventors Date
11072885 Fluorine-free water-repellent composition — 2021-07-27
10597816 Fluorine-containing water-repellent composition Waltraud Gasafi-Martin 2020-03-24
10407823 Composition comprising mixtures of polyacryates with fluorine-containing polyacrylates Regina Brunnmaier 2019-09-10
7976583 Oil-, water- and soil-repellent perfluoroalkylethyl methacrylate copolymers Hans-Joachim Goetz , Florian Bauers 2011-07-12
6515172 Process for the preparation of perfluorocarboxylic acids Ralf Grottenmüller , Anton Probst , Klaus Dullinger 2003-02-04
5798429 Composition for the water- and oil-repellent treatment of absorbent materials Rudolf Hager , Gunther Kolleritsch 1998-08-25
5648528 Saturated fluoroalkylamines and their derivatives, and mixtures thereof Gunter Prossel , Frank Wehowsky 1997-07-15
5648527 Saturated fluoroalkylamines and their derivatives, and mixtures thereof Gunter Prossel , Frank Wehowsky 1997-07-15
5227540 Process for the preparation of primary and secondary fluorine-containing alcohols — 1993-07-13
5171877 Urethanes made from aliphatic fluoro alcohols, isocyanates and carboxylic acids, a process for their preparation and their use Rainer Kupfer , Rolf Kleber , Lothar Jaeckel , Fritz J. Gohlke 1992-12-15
5147748 Use of colorless highly fluorine-substituted phosphonium compounds as charge control agents for electrophotographic recording processes Jorg Gitzel , Hans-Tobias Macholdt 1992-09-15
5103048 Surface-active compounds having a perfluoroalkyl group and a nitrogen-containing aliphatic radical, a process for their preparation and their use Frank Wehowsky , Norbert Schmitt 1992-04-07
5055619 Phosphonium compounds and processes for their preparation Jorg Gitzel , Hans-Tobias Macholdt 1991-10-08
