Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6184414 | Process for producing ammonium-2-hydroxy-4-(methylthio)-butyrate, mixtures containing the same in liquid form and their use | Helmut Suchsland | 2001-02-06 |
| 4919728 | Method of manufacturing nonmagnetic drilling string components | Helmut Pohl, Alois Puchl | 1990-04-24 |