Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10259974 | Roof coating system | Christian Kohl | 2019-04-16 |
| 5223139 | Filter material in the form of flexible leaves or sheets and a method of producing such material | Helmut Ruger, Gerd Ritter, Peter P. Breitbach | 1993-06-29 |
| 4276853 | Experimental plant for the coating and drying of material in the form of webs | Hans Gref, Werner Zander, Josef Busch | 1981-07-07 |