Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4956988 | Mandrel rod for pipe rolling mills | Francis Fischer, Jean P. Calmes | 1990-09-18 |
| 4713186 | Lubricant additive in powder to paste form | Ulrich Kristen, Ulrich Haring, Francis Fischer | 1987-12-15 |
| 4710307 | Pickling agent | Jacques Periard | 1987-12-01 |
| 4575430 | Separating-and-lubricating agent in solid form | Jacques Periard, Francis Fischer | 1986-03-11 |