Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5310530 | Method for decreasing the sulfur content of phosphorous | Rudolf Schumann | 1994-05-10 |
| 5296212 | Method for the removal of sulfur from phosphorus | Rudolf Schumann | 1994-03-22 |