Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9863484 | Friction ring, synchronizer ring, synchronizing unit as well as a variable gear transmission for a vehicle | Marcus Spreckels, Ulf Christoffer | 2018-01-09 |
| 9400019 | Friction ring, synchronizer unit, and gear changing transmission for a vehicle | Marcus Spreckels, Ulf Christoffer, Sebastian Augustin | 2016-07-26 |
| 7121393 | Segmented synchronizer clutch | Keith Roberts | 2006-10-17 |
| 7014027 | Friction material having oil localization slots | Jeffrey W. Adair, Jeffrey Morris, Graham Marlborough, Norman R. Jones | 2006-03-21 |
| 5620075 | C-shaped synchronizer spring | Jonathan G. Larsen, Keith Roberts | 1997-04-15 |
| 5531305 | Synchronizer clutch assembly for multiple ratio gearing | Keith Roberts, Christopher D. Thomas, James L. Lamin, Jonathan G. Larsen | 1996-07-02 |