Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6395853 | Water-soluble copolymers and their use for exploration and production of petroleum and natural gas | Reinhard J. Oswald, Roman Morschhäuser, Karl Heinz Heier, Aranka Tardi, Juergen Tonhauser +1 more | 2002-05-28 |