Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9856732 | Tracers | Beata Krognes Jessheim, Sissel Opsahl Viig, Helge Stray | 2018-01-02 |
| 7560690 | System for delivery of a tracer in fluid transport systems and use thereof | Helge Stray, Sindre Hassfjell | 2009-07-14 |