Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8377304 | Method for treatment of sludge in water purification | Estera Szwajcer Dey | 2013-02-19 |
| 7311835 | Method for supplying oxygen to a water purification process | Estera Szwajcer Dey | 2007-12-25 |
| 6793904 | Method for the preparation of sodium percarbonate granules having enhanced stability | Pentti Pekonen | 2004-09-21 |
| 6188840 | Process for the manufacturing of a pressure vessel and a pressure vessel, especially for a water heater, made by the process | Witold Orlowski | 2001-02-13 |