Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6737276 | Method and device for determining the total organic carbon content in liquids, especially ultra-pure water | Werner Voss, Erich Messerschmitt | 2004-05-18 |
| 5925240 | Water treatment system having dosing control | Frederick C. Wilkins, Li-Shiang Liang, Stephane Dupont, Achim Brust, Felix Nussbaum | 1999-07-20 |
| 5919357 | Filter cartridge assembly | Frederick C. Wilkins, Arthur F. Williams, Li-Shiang Liang, Stephane Dupont, Achim Brust +1 more | 1999-07-06 |
| 4741828 | Filter cartridge for the improvement of the quality of drinking water | Erich Alhauser | 1988-05-03 |