Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6913416 | Bitumen or asphalt for the production of road surfaces, road surfaces, and method for the preparation of bitumen or asphalt | Ferdinand Richter, Michael Matthai, Bruno Iversen, Klaus-Werner Damm | 2005-07-05 |