Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6809146 | Rubber mixtures containing silica, carbon black and rubber gel | Werner Obrecht | 2004-10-26 |
| 6737478 | Rubber gels and rubber compounds containing phenolic resin adducts | Werner Obrecht | 2004-05-18 |