Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7972514 | Method and a system for performing maintenance on a membrane used for pressure retarded osmosis | Torleif Holt | 2011-07-05 |
| 7566402 | Semi-permeable membrane for use in osmosis, and method and plant for providing elevated pressure by osmosis to create power | Torleif Holt | 2009-07-28 |
| 7563370 | Semi-permeable membrane for use in osmosis and method and plant for providing elevated pressure by osmosis to create power | Torleif Holt | 2009-07-21 |
| 5900151 | Method for sulphate removal magnesium chloride brine | Per Oscar Wiig, Ole W.ae butted.rnes, Birger Langseth, Carl Margcotte | 1999-05-04 |