Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5384059 | Heat transfer fluid and process for its preparation | Alfons Klein, Helmut Fiege, Klaus-Christian Paetz | 1995-01-24 |
| 4912596 | Dielectric liquids | Alfons Klein, Helmut Fiege | 1990-03-27 |
| 4772428 | Impregnating agents and the use thereof | Alfons Klein, Karlfried Wedemeyer | 1988-09-20 |
| 4294715 | Impregnating agent and its use | Alfons Klein, Karlfried Wedemeyer, Ernst Knust, Lothar Havenith | 1981-10-13 |
| 4203145 | Chloro-diphenyl | Alfons Klein, Ernst Knust, Karlfried Wedemeyer | 1980-05-13 |