Computalog USA, Inc.
Records under this name other than patents Computalog USA, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,924,640 | Oil and Gas Well Tubular Inspection System Using Hall Effect Sensors Formerly held Term ended Term ended Feb 27, 2023 · High confidence | Term ended | Term ended Feb 27, 2023 | High confidence |
| US 7,139,350 | Method and Apparatus for Measuring Radiation in a Borehole Formerly held Term ended Term ended Feb 15, 2023 · Medium confidence | Term ended | Term ended Feb 15, 2023 | Medium confidence |
| US 6,815,954 | Method and Apparatus for Full Offset Resistivity Imaging for Use in Boreholes Formerly held Term ended Term ended Jan 9, 2023 · High confidence | Term ended | Term ended Jan 9, 2023 | High confidence |
| US 6,742,602 | Perforating Gun Firing Head with Vented Block for Holding Detonator Formerly held Term ended Term ended Aug 27, 2022 · High confidence | Term ended | Term ended Aug 27, 2022 | High confidence |
| US 6,918,334 | Perforating Gun Firing Head with Vented Block for Holding Detonator Formerly held Term ended Term ended Aug 27, 2022 · High confidence | Term ended | Term ended Aug 27, 2022 | High confidence |
| US 6,666,285 | Logging-While-Drilling Apparatus and Methods for Measuring Density Formerly held Term ended Term ended Apr 17, 2022 · High confidence | Term ended | Term ended Apr 17, 2022 | High confidence |
| US 6,738,720 | Apparatus and Methods for Measurement of Density of Materials Using a Neutron Source and Two Spectrometers Formerly held Term ended Term ended Apr 12, 2022 · High confidence | Term ended | Term ended Apr 12, 2022 | High confidence |
| US 6,936,812 | Apparatus and Method for Determining Density, Porosity and Fluid Saturation of Formations Penetrated by a Borehole Formerly held Term ended Term ended Mar 19, 2022 · Medium confidence | Term ended | Term ended Mar 19, 2022 | Medium confidence |
| US 6,653,839 | Electrical Measurement Apparatus and Method for Measuring an Electrical Characteristic of an Earth Formation Formerly held Term ended Term ended Dec 28, 2021 · High confidence | Term ended | Term ended Dec 28, 2021 | High confidence |
| US 6,702,010 | Apparatus and Method for Actuating Arms Formerly held Term ended Term ended Dec 28, 2021 · High confidence | Term ended | Term ended Dec 28, 2021 | High confidence |