Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618779 | Triglyceride-based base oil for hydraulic oils | Johann Klein, Frank Bongardt, Peter Daute | 1997-04-08 |
| 5616679 | Polyalkylene glycol | Roland Gr utzmacher, Alfred Westfechtel | 1997-04-01 |