Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4956685 | Thin film solar cell having a concave n-i-p structure | Roland Fischer, Kkard Niemann | 1990-09-11 |
| 4931412 | Method of producing a thin film solar cell having a n-i-p structure | Roland Fischer, Ekkehard Niemann | 1990-06-05 |