Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11999207 | Air springs and methods for making the same | Ron J. Johnson, Angad Vasant Patil, Jeremy Mercer, Ken Casagrande, Young-Chun Lee | 2024-06-04 |
| 11433726 | Air springs and methods for making the same | Ron J. Johnson, Angad Vasant Patil, Jeremy Mercer, Ken Casagrande, Young-Chun Lee | 2022-09-06 |
| RE46112 | Dual lobe airspring | Richard F. Stieg | 2016-08-16 |
| 7967280 | Air spring with debris and ice barrier | — | 2011-06-28 |
| 7588234 | Airspring sleeve | — | 2009-09-15 |
| 6902155 | Air spring elliptical piston | — | 2005-06-07 |
| 6386523 | Dual lobe airspring | Richard F. Stieg | 2002-05-14 |
| 5918863 | Side load compensating airspring for a vehicle suspension and method | Richard F. Stieg | 1999-07-06 |
| 5752692 | Side load compensating airspring strut | Richard F. Stieg | 1998-05-19 |
| 4954194 | Method for making an airspring and sleeve | — | 1990-09-04 |
| 4763883 | Airspring and sleeve | — | 1988-08-16 |