Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7172975 | Process for the wet chemical treatment of semiconductor wafers | Helmut Schwenk, Johann Zach | 2007-02-06 |
| 6868151 | Method and device for increasing the fail safety of information desks connected to exchanges | Gerhard Roscher | 2005-03-15 |
| 6503335 | Centrifuge and method for centrifuging a semiconductor wafer | Georg-Friedrich Hohl, Susanne Bauer-Mayer, Günther Brunner, Hans-Joachim Luthe, Franz Sollinger | 2003-01-07 |
| 6451124 | Process for the chemical treatment of semiconductor wafers | — | 2002-09-17 |
| 6412500 | Device and method for cleaning semiconductor wafers | Franz Sollinger, Hans-Joachim Luthe, Georg-Friedrich Hohl | 2002-07-02 |
| 5695572 | Cleaning agent and method for cleaning semiconductor wafers | Georg Hochgesang, Anton Schnegg, Gertraud Thalhammer | 1997-12-09 |
| 5049200 | Process for the hydrophilizing and/or cement-residue-removing surface treatment of silicon wafers | Susanne Bauer-Mayer, Rudolf Griesshammer, Helmut Kirschner | 1991-09-17 |