Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6687936 | Valve for zoned cellular cushion | Robert Klotz, Paul A. Rickman, Dennis L. Clapper | 2004-02-10 |
| 6564410 | Valve for zoned cellular cushion | Robert Klotz, Paul A. Rickman | 2003-05-20 |
| 5152023 | Cellular cushion having sealed cells | — | 1992-10-06 |