Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5071508 | Method of and arrangement for etching an etch material consisting at least partly of metal | Alfred Scheithauer, Wolfgang Alberth, Herbert Ziegler | 1991-12-10 |
| 5002627 | Spray etching apparatus with automatic individually controllable etching jets | Alfred Scheithauer, Wolfgang Alberth, Herbert Ziegler | 1991-03-26 |