Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6013114 | Environmentally friendly diesel fuel | Martin Hille, Frank Weinelt, Werner Reimann | 2000-01-11 |
| 5830830 | Use of acetal-containing mixtures | Martin Hille, Frank Weinelt | 1998-11-03 |
| 5759963 | Use of acetals | Martin Hille, Bernd Windhausen, Hans Scholz, Frank Weinelt | 1998-06-02 |
| 5510436 | Water-soluble copolymers useful in drilling fluids | Martin Hille, Jürgen TONHAUSER, Fritz Engelhardt, Ulrich Riegel | 1996-04-23 |
| 4587283 | Cement slurries for deep holes, with a copolymer content for reducing the water loss | Martin Hille, Wolfgang Friede, Friedrich Engelhardt, Ulrich Riegel | 1986-05-06 |
| 4357245 | Water-soluble copolymer and its preparation | Friedrich Engelhardt, Ulrich Riegel, Martin Hille | 1982-11-02 |
| 4309523 | Water-soluble copolymer of acrylamidomethylpropanesulfonic acids salts | Friedrich Engelhardt, Ulrich Riegel, Martin Hille | 1982-01-05 |