Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859210 | Motor fuel or lubricant composition containing polybutyl or polyisobutyl derivatives | Dieter Franz, Helmut Mach, Hans Peter Rath | 1989-08-22 |
| 4832702 | Polybutyl-and polyisobutylamines, their preparation, and fuel compositions containing these | Dieter Franz, Hans Peter Rath | 1989-05-23 |
| 4801738 | Preparation of .delta.-formylvalerates | Heinz-Walter Schneider, Volker Taglieber | 1989-01-31 |