Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863485 | Fuel briquettes | Hans G. Scafer, Wolfgang Cieslik, Heinz Opdenwinkel, Axel Vogts, Gunter Poppel | 1989-09-05 |
| 4839415 | Paper sizing agents, the manufacture and use of same | Hans J. Weissen, Klaus Schloter | 1989-06-13 |
| 4777224 | Anionic polyurethanes | Marek Gorzynski | 1988-10-11 |
| 4632730 | Method for increasing the absorption rate of paper | Hasan Ulubay | 1986-12-30 |
| 4586936 | Fuel briquets | Hans-Georg Schaffer, Axel Vogts, Gunter Poppel | 1986-05-06 |
| 4369042 | Fuel briquets | Hans G. Schafer, Axel Vogts, Gunter Poppel | 1983-01-18 |