Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5900289 | Method of producing a colorating coating | Rolf Hartmann, Armin Tschentscher | 1999-05-04 |
| 4728529 | Method of producing diamond-like carbon-coatings | Heinz-Werner Etzkorn | 1988-03-01 |