Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4362635 | Lactone-modified ester oils | Rolf Dhein, Karl-Heinz Hentschel, Karl Nutzel, Klaus Morche | 1982-12-07 |
| 4292187 | Lubricating oils for the working of metals | Karl-Heinz Hentschel, Rolf Dhein | 1981-09-29 |