Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5122249 | Method of producing a cover layer of amorphous carbon on a substrate | Ekkehard Niemann | 1992-06-16 |
| 4900646 | Electrophotographic recording material and method of producing it | Wilhelm Senske, Ekkehard Niemann, Guido Blang | 1990-02-13 |
| 4713311 | Homogeneous photoconductive layer of amorphous silicon and hydrogen | Wilhelm Senske, Norbert Marschall, Karl-Heinrich Greeb | 1987-12-15 |