Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6637733 | Air spring with vibration isolation | David A. Weitzenhof | 2003-10-28 |
| 6619635 | Air spring clamping assembly | Daniel J. Leonard | 2003-09-16 |
| 6113081 | Snap-on bumper for air spring | Daniel J. Leonard, Mohamad Taghizadeh | 2000-09-05 |
| 6109598 | Air spring bumper utilizing a combination of materials | Terry J. Henderson, Mohamad Taghizadeh, Andreas Peickert, Daniel J. Leonard, James M. Wallin +1 more | 2000-08-29 |
| 5941510 | Metal/elastomeric bumper for air springs | David E. Grass, Daniel J. Leonard, Mohamad Taghizadeh, Michael K. Whitaker | 1999-08-24 |