Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882022 | Process and apparatus for sputter coating a gold alloy onto a substrate | Dieter Hoffman, G. A. Horst Siewert, Horst Dietrich | 1989-11-21 |
| 4871434 | Process for equipment to coat tools for machining and forming techniques with mechanically resistant layers | Bernd Hensel, Michael Scherer, Otto Knotek | 1989-10-03 |
| 4808373 | Multiple-substance alloy for targets of cathode sputtering apparatus | Dieter Hoffman, G. A. Horst Siewert, Horst Dietrich | 1989-02-28 |