Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10626928 | Assembly for a synchronization unit of a variable ratio gear transmission | Ulf Christoffer, Ralf FREDE | 2020-04-21 |
| 10612603 | Synchronizing device as well as a gear changing transmission for a vehicle | Ulf Christoffer, Nils Weber | 2020-04-07 |
| 10253824 | Friction ring for a synchronization unit | Ulf Christoffer, Dietmar Koester | 2019-04-09 |
| 9863484 | Friction ring, synchronizer ring, synchronizing unit as well as a variable gear transmission for a vehicle | Gary I. Skipper, Ulf Christoffer | 2018-01-09 |
| 9777800 | Synchronizer ring | — | 2017-10-03 |
| 9400019 | Friction ring, synchronizer unit, and gear changing transmission for a vehicle | Gary I. Skipper, Ulf Christoffer, Sebastian Augustin | 2016-07-26 |
| 9133894 | Synchronizing ring and gear changing transmission for a vehicle | Ulf Christoffer | 2015-09-15 |
| 8342307 | Synchronizing ring | Ulf Christoffer | 2013-01-01 |