Inventor
DAVID ANDREW BARFOOT
Inventor
US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Bprimary
E21BEarth or rock drilling30%
G01VGeophysics26%
G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves22%
G01DMeasuring not specially adapted for a specific variable4%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light4%
G02BOptical elements, systems or apparatus4%
H01LSemiconductor devices4%
H10NElectric solid-state devices not otherwise provided for4%
PatentTitleYear
11,976,552Distributed sensing systems and methods with spatial location correlation202411,940,583Gauge length effect and gauge length conversion202411,366,244Distributed acoustic sensing system with a polarization control device for improving signal-to-noise ratio202211,313,222Cooled single-photon detector apparatus and methods202211,215,727Gauge length effect and gauge length conversion202211,199,086Detecting changes in an environmental condition along a wellbore202111,149,520Mitigation of attenuation for fiber optic sensing during cementing2021Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2021–2024Patents assigned to HALLIBURTON ENERGY SERVICES INC (7)· patent assignee history
2021–2024Based in US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HALLIBURTON ENERGY SERVICES INC | 7 | 2021–2024 |
Locations
| Location | Patents | Span |
|---|---|---|
| US | 7 | 2021–2024 |