Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6670416 | Tread rubber for high traction tires | Edward J. Blok, Paul Harry Sandstrom, Cheryl Ann Losey, David John Zanzig | 2003-12-30 |
| 6581659 | Tire with silica-reinforced tread comprised of trans 1,4-polybutadiene, solution, SBR polyisoprene and defined amount of carbon black and amorphous silica | David John Zanzig, Paul Harry Sandstrom, Edward J. Blok, Gregory Martin Holtzapple | 2003-06-24 |