Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8795031 | Apparatus and method for removing a portion of material from the surface of a ceramic | — | 2014-08-05 |
| 8796157 | Method for selective etching | — | 2014-08-05 |
| 6162739 | Process for wet etching of semiconductor wafers | Franz Sumnitsch | 2000-12-19 |
| 5904164 | Arrangement for treatment of wafer-shaped articles, particularly silicon wafers | Helmut Frey | 1999-05-18 |