Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885110 | Branched polyoxyalkylene copolyesters, a process for their preparation, and their use | Willibald Bose, Martin Hille, Roland Bohm, Friedrich Staiss | 1989-12-05 |
| 4885111 | Branched, quaternary polyoxyalkylene copolyesters, a process for their preparation, and their use | Wllibald Bose, Martin Hille, Roland Bohm, Friedrich Staiss | 1989-12-05 |
| 4828765 | Oxyalkylated quaternary ammonium compounds and their use as drag reducing agents | Dieter Ohlendorf | 1989-05-09 |