Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12203289 | Locking device | Dirk Backhaus | 2025-01-21 |
| 11866958 | Locking device | Dirk Backhaus | 2024-01-09 |
| D953144 | Lockas | Dirk Backhaus | 2022-05-31 |
| 9162850 | Elevator shaft closure door frame with control arrangement | Roman Hopp, Manuel Teixeira Pinto Dias | 2015-10-20 |
| 7422089 | Drive unit for an elevator | Urs Ammon, Andrzej Cholinski | 2008-09-09 |
| 4602087 | Distyrylbiphenyls | Hans R. Meyer, Kurt Weber | 1986-07-22 |
| 4468352 | Distyrylbiphenyls | Hans R. Meyer, Kurt Weber | 1984-08-28 |
| 4339393 | Distyrylbiphenyls | Hans R. Meyer, Kurt Weber | 1982-07-13 |
| 4263431 | Cationic fluorescent whitening agents | Kurt Weber, Hans R. Meyer | 1981-04-21 |
| 4222739 | Certain bis(phenyl)-benzodifurans | Bruno Kagi, Geza Kormany | 1980-09-16 |