Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5951970 | Drying composition comprising an odoriferous substance | Wolfgang Wrede | 1999-09-14 |
| 5554711 | Polyisocyanate addition compounds containing cyanamide groups and their use | Harro Tr aubel, Thomas M unzmay, Tillmann Hassel, Wilhelm Kr ummel, Hans-Albert Ehlert | 1996-09-10 |
| 5472741 | Softening and waterproofing retanning agents | Gunter Sackmann, Bruno Bomer, Henricus Slaats | 1995-12-05 |
| 5417723 | Use of ester urethanes for retanning | Harro Traubel, Wilhelm Krummel | 1995-05-23 |
| 5340365 | Process for producing chrome leather | Bernhard Wehling, Franz Schade, Herbert Burkhardt, Peter Schindlmayr | 1994-08-23 |