Inventor
Tor Sigve SAETRE
Inventor
US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
12,460,507Apparatus and method of reducing surge when running casing202511,448,038Reverse cementing valve system and method employing a double flapper valve with sliding sleeve and drillable nose202211,391,119Differential fill valve with collet sleeve202211,293,253Dual sub-surface release plug with bypass for small diameter liners2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2025Patents assigned to HALLIBURTON ENERGY SERVICES INC (4)· patent assignee history
2022Based in US· patent location history
2025Based in NO· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HALLIBURTON ENERGY SERVICES INC | 4 | 2022–2025 |
Locations
| Location | Patents | Span |
|---|---|---|
| US | 3 | 2022 |
| NO | 1 | 2025 |