Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7841370 | Foaming liquid material and use thereof for reducing noise in mounted tires | Marc Engel, Jan Leyssens | 2010-11-30 |
| D403282 | Tire tread | Joseph Louis Aull, Jeffrey Joe McElfresh, Karl Eric Sundkvist, Piotr Janusz Wesolowski | 1998-12-29 |
| D401895 | Tire tread | Joseph Louis Aull, Jeffrey Joe McElfresh, Karl Eric Sundkvist, Piotr Janusz Wesolowski | 1998-12-01 |