Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859756 | Polymers of oxyalkylated unsaturated quaternary ammonium salts, their preparation and their use | Hans-Helmut Goertz, Friedrich Vogel | 1989-08-22 |
| 4827014 | 2-Hydroxy-3-aminopropionic-n,n-diacetic acid and derivatives thereof, preparation thereof, and detergents containing same | Richard Baur, Felix Richter, Stefan Birnbach, Rolf Fikentscher, Ekhard Winkler +1 more | 1989-05-02 |
| 4816553 | Polyacetals, preparation thereof from dialdehydes and polyolcarboxylic acids, and use of same | Richard Baur, Rolf Fikentscher, Felix Richter, Wolfgang Trieselt, Paul Diessel +2 more | 1989-03-28 |
| 4814505 | Purification of n-vinylformamide | Michael Kroener, Willi Schmidt, Theo Proll, Heinrich Hartmann | 1989-03-21 |