Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4991822 | Valve having ceramic valve bodies with low friction coatings | — | 1991-02-12 |
| 4981071 | Machine element with coating | — | 1991-01-01 |
| 4948259 | Method and apparatus for monitoring layer erosion in a dry-etching process | Ingo Hussla, Gerhard Lorenz | 1990-08-14 |
| 4762730 | Method for producing transparent protective coatings from silicon compounds | Walter Zultzke | 1988-08-09 |