Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6717411 | Electromagnetic method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves | Svein Ellingsrud, Terje Eidesmo, Harald Westerdahl | 2004-04-06 |
| 6714153 | Device for electromagnetic detection of geological properties in a well | Svein Ellingsrud, Vidar Sten-Halvorsen, Einar Stølen, Harald Westerdahl, Terje Eidesmo | 2004-03-30 |
| 6696839 | Electromagnetic methods and apparatus for determining the content of subterranean reservoirs | Svein Ellingsrud, Terje Eidesmo, Harald Westerdahl | 2004-02-24 |