Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8796946 | Emergency lighting device for operating a light source, in particular an LED | Daniel Rohner | 2014-08-05 |
| 8716936 | Emergency lighting device for operating a light source, in particular an LED | Daniel Rohner | 2014-05-06 |
| 8680778 | LED driver circuit | Frederick G. Stevens, Geoff Wallhead, Daniel Rohner | 2014-03-25 |
| 4702896 | Thermal treatment of phosphate rock | — | 1987-10-27 |
| 4606897 | Method to improve acidulation quality of Idaho phosphate rock | — | 1986-08-19 |
| 4600505 | Single float step phosphate ore beneficiation | Myra M. Soroczak | 1986-07-15 |
| T106801 | Method to improve acidulation quality of Idaho phosphate rock | — | 1986-07-01 |
| 4588498 | Single float step phosphate ore beneficiation | Myra M. Soroczak | 1986-05-13 |
| 4557909 | Method to improve acidulation quality of North Carolina phosphate rock | — | 1985-12-10 |
| T106002 | Single float step phosphate ore beneficiation | Myra M. Soroczak | 1985-11-05 |
| T105701 | Method to improved acidulation quality of North Carolina phosphate rock | — | 1985-08-06 |
| T105602 | Thermal treatment of phosphate rock | — | 1985-07-02 |