Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11001902 | Production of leather | Yu Mei, Robert Orth, Thomas Schneider | 2021-05-11 |
| 10131831 | Process for acidizing using retarded acid formulations | Shawn McCleskey Rimassa, Joseph P. Borst | 2018-11-20 |
| 8863841 | Alkanesulfonic acid microcapsules and use thereof in deep wells | Norbert Steidl | 2014-10-21 |
| 8568522 | Method of passivating metallic surfaces by means of copolymers having phosphoric acid and/or phosphonic acid groups | Frank Klippel, Alexander Gothlich, Gunnar Schornick, Dietrich Fehringer, Thomas Heidenfelder +1 more | 2013-10-29 |
| 8372216 | Continuous method for treating the surface of metal strips | Guido Vandermeulen, Bernd Strubel, Helmut Witteler, Jessica Neumann, Bernd Laubusch +4 more | 2013-02-12 |
| 8163395 | Method for coating metals | Helmut Witteler | 2012-04-24 |
| 7905964 | Method for the passivation of metal surfaces with compositions comprising polymers with acid groups and waxes | Helmut Witteler, Thomas Heidenfelder, Alexander Gothlich | 2011-03-15 |
| 7749337 | Method for the passivation of metal surfaces with polymers containing acid groups | Helmut Witteler, Thomas Heidenfelder, Alexander Gothlich, Jens Haas, Frank Klippel +1 more | 2010-07-06 |