Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4775427 | Phosphate conversion coatings for composite metals | Horst-Peter Geimer | 1988-10-04 |
| 4707193 | Method for activating metal surfaces prior to zinc phosphation | Reinhard Opitz | 1987-11-17 |
| 4680064 | Phosphate conversion coating accelerators | Othmar V. Ettingshausen | 1987-07-14 |
| 4600447 | After-passivation of phosphated metal surfaces | Reinhard Opitz, Kurt Hosemann | 1986-07-15 |