Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5195621 | Torque converter and clutch with a turbine ring friction interface | James P. Poorman | 1993-03-23 |
| 4889012 | Damping assembly for a torque converter clutch | — | 1989-12-26 |
| 4856638 | Clutch damper with friction lag | William H. Roth | 1989-08-15 |