Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5312865 | Coating compositions | Rainer Hoefer, Roland Gruetzmacher | 1994-05-17 |
| 4946471 | Adhesion promoter for leather finishing | Hans-Herbert Friese, Ludwig Schieferstein | 1990-08-07 |
| 4772289 | Primer for leather finishes | Hermann Anzinger, Hans-Herbert Friese, Michael Marschner, Uwe Ploog, Ludwig Schieferstein +2 more | 1988-09-20 |