Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5776262 | Solar module with perforated plate | — | 1998-07-07 |
| 5768831 | Rooftile support for photocell panel | — | 1998-06-23 |
| 5112408 | Roofing tile assembly | — | 1992-05-12 |
| 4596237 | Solar-energy converter | Friedrich W. Grimme, Wolfgang Heidrich | 1986-06-24 |
| 4560411 | Aggregate for concrete or mortar | — | 1985-12-24 |
| 4544575 | Method of making glass panels with selective radiation-blocking effect | — | 1985-10-01 |
| 4530806 | Process of making articles of foamed polymethyl methacrylate | — | 1985-07-23 |
| 4492778 | Method for making fluorescent light-collectors | Uwe Claussen, Josef Merten, Harry Rohr | 1985-01-08 |
| 4440153 | Solar concentrator | — | 1984-04-03 |
| 4419459 | Process of producing transparent foamed plastics materials | — | 1983-12-06 |
| 4338353 | Method for increasing the strength of a porous body | — | 1982-07-06 |