Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973457 | Method for the reduction of nitrogen oxide | Leif Hjornevik, Erik Fareid, Oystein Nirisen | 1990-11-27 |
| 4400891 | Steam cleaning system for process equipment and compressors | — | 1983-08-30 |
| 4295895 | Method for steam cleaning of compressors | — | 1981-10-20 |