Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844714 | Fuels containing small amounts of alkoxylates and polycarboximides | Hans-Henning Vogel, Hans Peter Rath, Knut Oppenlaender | 1989-07-04 |
| 4827008 | Preparation of alkoxysilanes containing a low level of chlorine compounds | Knut Oppenlaender, Gert Liebold, Guenter Frey | 1989-05-02 |
| 4810404 | Nitrite- and phosphate-free glycol-based coolant mixtures | Knut Oppenlaender, Gert Liebold, Guenter Frey | 1989-03-07 |