Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5186720 | Use of products of the reaction of alkenyl-spiro-bislactones with amines as paraffin-dispersants | Werner Ritschel | 1993-02-16 |
| 4985048 | Polymer mixtures for improving the low-temperature flow properties of mineral oil distillates | Herbert Wirtz, Juliane Balzer | 1991-01-15 |