Barfoot; David A.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Barfoot; David A..The latest application filed is for "optically sensing subterranean physical properties using wavelength division multiplexing".

Company Profile

5.16.18

Barfoot; David A. - Austin TX
Barfoot; David A. - Houston TX
Barfoot; David A - Houston TX

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Soft kill laser configuration for ground vehicle threats Grant 11,248,879 - Barfoot , et al. February 15, 2	2022-02-15
Methods for enhanced soft-kill countermeasure using a tracking radar Grant 11,181,346 - Barfoot , et al. November 23, 2	2021-11-23
Well monitoring with optical electromagnetic sensing system Grant 10,704,377 - Barfoot , et al.	2020-07-07
Downhole optical communication Grant 10,294,778 - Barfoot , et al.	2019-05-21
Power limiting methods for use with optical systems in hazardous area locations Grant 10,254,159 - Barfoot , et al.	2019-04-09
Optical well logging Grant 10,247,840 - Skinner , et al.	2019-04-02
Modifying optical signals output by a wavelength division demultiplexer to detect subterranean physical properties Grant 10,234,311 - Choi , et al.	2019-03-19
Strain sensitive optical fiber cable package for downhole distributed acoustic sensing Grant 10,215,015 - Xia , et al. Feb	2019-02-26
Wellbore monitoring system using strain sensitive optical fiber cable package Grant 10,215,016 - Xia , et al. Feb	2019-02-26
Distributed acoustic sensing systems and methods employing under-filled multi-mode optical fiber Grant 10,209,383 - Barfoot , et al. Feb	2019-02-19
Method of manufacturing a distributed acoustic sensing cable Grant 10,173,381 - Xia , et al. J	2019-01-08
Interferometric high fidelity optical phase demodulation using 120 degree phase separation Grant 10,101,182 - Barfoot October 16, 2	2018-10-16
Optical power limiting method using stimulated Brillouin scattering in fiber optic waveguides Grant 9,835,478 - Barfoot , et al. December 5, 2	2017-12-05
Optically Sensing Subterranean Physical Properties Using Wavelength Division Multiplexing App 20170292861 - Choi; Han-Sun ; et al.	2017-10-12
A Method of Manufacturing a Distributed Acoustic Sensing Cable App 20170259513 - Xia; Hua ; et al.	2017-09-14
A Wellbore Monitoring System Using Strain Sensitive Optical Fiber Cable Package App 20170260848 - Xia; Hua ; et al.	2017-09-14
A Strain Sensitive Optical Fiber Cable Package for Downhole Distributed Acoustic Sensing App 20170260847 - Xia; Hua ; et al.	2017-09-14
Well Monitoring with Optical Electromagnetic Sensing System App 20170254191 - Barfoot; David A. ; et al.	2017-09-07
Robust optical fiber-based distributed sensing systems and methods Grant 9,617,847 - Jaaskelainen , et al. April 11, 2	2017-04-11
Interferometric High Fidelity Optical Phase Demodulation App 20170010133 - Barfoot; David A.	2017-01-12
Distributed Acoustic Sensing Systems and Methods Employing Under-Filled Multi-Mode Optical Fiber App 20160341841 - Barfoot; David A. ; et al.	2016-11-24
Distributed acoustic sensing systems and methods employing under-filled multi-mode optical fiber Grant 9,429,466 - Barfoot , et al. August 30, 2	2016-08-30
Downhole Optical Communication App 20160208603 - Barfoot; David A ; et al.	2016-07-21
Optical Power Limiting Method Using Stimulated Brillouin Scattering in Fiber Optic Waveguides App 20160195412 - Barfoot; David A. ; et al.	2016-07-07
Power Limiting Methods for Use with Optical Systems in Hazardous Area Locations App 20160187194 - Barfoot; David A. ; et al.	2016-06-30
Geo-locating positions along optical waveguides Grant 9,316,762 - Barfoot , et al. April 19, 2	2016-04-19
Distributed Acoustic Sensing Systems And Methods Employing Under-filled Multi-mode Optical Fiber App 20150114127 - BARFOOT; David A. ; et al.	2015-04-30
Robust Optical Fiber-Based Distributed Sensing Systems and Methods App 20150116124 - JAASKELAINEN; Kari-Mikko ; et al.	2015-04-30
Geo-locating Positions Along Optical Waveguides App 20150098673 - BARFOOT; David A. ; et al.	2015-04-09
Optical Well Logging App 20140203946 - SKINNER; Neal G. ; et al.	2014-07-24
Downhole Optical Acoustic Transducers App 20140204712 - SKINNER; Neal G. ; et al.	2014-07-24
Calibration Of A Well Acoustic Sensing System App 20140150523 - STOKELY; Christopher L. ; et al.	2014-06-05
Event Synchronization For Optical Signals App 20140064742 - BARFOOT; David A. ; et al.	2014-03-06

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