Inventor
Jinhua CAO
Inventor
US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling77%
G01RMeasuring electric variables15%
G01NInvestigating or analysing materials by determining their chemical or physical properties8%
PatentTitleYear
12,326,079Induction loop cementing progress detection202512,188,343Sensor and actuator for autonomously detecting resistivity derivatives of wellbore fluids and closing fluid path202512,060,763Cementing apparatus for reverse cementing202412,037,889Permanent electromagnet sensor to detect the end of reverse cementing202411,965,417Magnetic sensor assembly having a non-flat shape plug for cement slurry sensing202411,802,850Magnetic permeability sensor with permanent magnet for downhole sensing202311,746,618Cementing apparatus for reverse cementing202311,519,258Pressure testing casing string during reverse cementing operations202211,448,038Reverse cementing valve system and method employing a double flapper valve with sliding sleeve and drillable nose202211,274,519Reverse cementing tool2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2025Patents assigned to HALLIBURTON ENERGY SERVICES INC (10)· patent assignee history
2022–2025Based in US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HALLIBURTON ENERGY SERVICES INC | 10 | 2022–2025 |
Locations
| Location | Patents | Span |
|---|---|---|
| US | 10 | 2022–2025 |