Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828361 | Method for making a rubber base composition containing silicic acid | Winfried Heidrich, Dirk Gross, Heinrich Sandau | 2004-12-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828361 | Method for making a rubber base composition containing silicic acid | Winfried Heidrich, Dirk Gross, Heinrich Sandau | 2004-12-07 |