Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D455998 | Tire tread | Richard Heinen | 2002-04-23 |
| D452198 | Tire tread | Richard Heinen | 2001-12-18 |
| D451853 | Tire tread | Richard Heinen | 2001-12-11 |
| D441695 | Tire tread | Richard Heinen | 2001-05-08 |
| D441328 | Tire tread | Richard Heinen | 2001-05-01 |
| D431800 | Tire tread | Richard Heinen | 2000-10-10 |
| D429478 | Tire tread | Richard Heinen | 2000-08-15 |
| D429194 | Tire tread | Richard Heinen, Claude Lardo | 2000-08-08 |
| D415079 | Tire tread | Richard Heinen, Berend Albert Hemmes | 1999-10-12 |