Inventor
GARD MICHAEL F
US45 patents
⚠️ This page may combine multiple inventors who share the name “GARD MICHAEL F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHARLES MACHINE WORKS
20 patentsUS6411094B1Jun 25, 2002
System and method for determining orientation to an underground object
CHARLES MACHINE WORKS127 citations99
US7786731B2Aug 31, 2010
Dipole locator using multiple measurement points
CHARLES MACHINE WORKS47 citations97
US5850624ADec 15, 1998
Electronic compass
CHARLES MACHINE WORKS235 citations97
US7038454B2May 2, 2006
System and method for detecting an underground object using magnetic field sensing
CHARLES MACHINE WORKS62 citations96
US5907242AMay 25, 1999
Balanced passive bandpass filter and preamplifier for a receiver
CHARLES MACHINE WORKS59 citations96
US5621325AApr 15, 1997
Avoiding ghosting artifacts during surface location of subsurface transmitters
CHARLES MACHINE WORKS104 citations95
US7649474B1Jan 19, 2010
System for wireless communication along a drill string
CHARLES MACHINE WORKS37 citations93
US7461707B2Dec 9, 2008
Electric horizontal directional drilling machine system
CHARLES MACHINE WORKS12 citations93
US8981780B2Mar 17, 2015
Dipole locator using multiple measurement points
CHARLES MACHINE WORKS16 citations92
US7663373B1Feb 16, 2010
Determining beacon location using magnetic field ratios
CHARLES MACHINE WORKS28 citations89
US7880336B2Feb 1, 2011
Electric horizontal directional drilling machine system
CHARLES MACHINE WORKS9 citations84
US7759824B2Jul 20, 2010
System and method for detecting an underground object using magnetic field sensing
CHARLES MACHINE WORKS9 citations84
US9752384B2Sep 5, 2017
Electric horizontal directional drilling machine system
CHARLES MACHINE WORKS2 citations73
US10060807B2Aug 28, 2018
Method and system for monitoring bend and torque forces on a drill pipe
CHARLES MACHINE WORKS2 citations68
US12259094B2Mar 25, 2025
Pipeline following sensor arrangement
CHARLES MACHINE WORKS1 citations63
US9850715B2Dec 26, 2017
Modular compaction boring machine system
CHARLES MACHINE WORKS2 citations61
US7999551B2Aug 16, 2011
Method for detection of signal source using estimation of noise statistics
CHARLES MACHINE WORKS3 citations61
US10107931B2Oct 23, 2018
Noise measurement in a locating receiver
CHARLES MACHINE WORKS0 citations52
US10677043B2Jun 9, 2020
External hollow antenna
CHARLES MACHINE WORKS0 citations51
US9995132B2Jun 12, 2018
External hollow antenna
CHARLES MACHINE WORKS1 citations51
ATLANTIC RICHFIELD CO
10 patentsUS5105444AApr 14, 1992
System for high speed data tranmission
ATLANTIC RICHFIELD CO23 citations93
US5091725AFeb 25, 1992
Well logging tool and system having a switched mode power amplifier
ATLANTIC RICHFIELD CO31 citations93
US4906928AMar 6, 1990
Transient electromagnetic apparatus with receiver having digitally controlled gain ranging amplifier for detecting irregularities on conductive containers
ATLANTIC RICHFIELD CO49 citations93
US4837518AJun 6, 1989
Method and apparatus for measuring the electrical resistivity of geologic formations through metal drill pipe or casing
ATLANTIC RICHFIELD CO45 citations91
US5090039AFeb 18, 1992
Inspecting coiled tubing for well operations
ATLANTIC RICHFIELD CO29 citations90
US4902981AFeb 20, 1990
Well casing potential measurement tool with compensated DC errors
ATLANTIC RICHFIELD CO22 citations81
US4992748AFeb 12, 1991
Period-inverting FM demodulator
ATLANTIC RICHFIELD CO12 citations74
US4916648AApr 10, 1990
Ultrasonic logging apparatus with improved receiver
ATLANTIC RICHFIELD CO19 citations74
US4891641AJan 2, 1990
Method for transmitting data over logging cable
ATLANTIC RICHFIELD CO17 citations74
US4853616AAug 1, 1989
Detection of water saturation in insulation at cased road crossings
ATLANTIC RICHFIELD CO5 citations63
GEN ELECTRIC
7 patentsUS5550889AAug 27, 1996
Alignment of an x-ray tube focal spot using a deflection coil
GEN ELECTRIC103 citations97
US5271055ADec 14, 1993
Methods for reducing motion induced artifacts in a projection imaging system
GEN ELECTRIC113 citations96
US5220589AJun 15, 1993
Correction circuit for a floating-point amplifier
GEN ELECTRIC36 citations93
US5400379AMar 21, 1995
Multi-slice x-ray CT using a detector mask
GEN ELECTRIC40 citations92
US5131021AJul 14, 1992
Computed tomography system with control and correction of fan beam position
GEN ELECTRIC45 citations92
US5400387AMar 21, 1995
Indirect measurement of voltage applied to diagnostic x-ray tubes
GEN ELECTRIC18 citations81
US5530735AJun 25, 1996
On-line measurement of x-ray tube voltage in a CT system
GEN ELECTRIC11 citations73
GARD MICHAEL F
4 patentsUS8305229B1Nov 6, 2012
System for wireless communication along a drill string
GARD MICHAEL F25 citations92
US8890361B2Nov 18, 2014
Electric horizontal directional drilling machine system
GARD MICHAEL F5 citations83
US8829906B2Sep 9, 2014
Method for detection of signal source using estimation of noise statistics
GARD MICHAEL F0 citations49
US9182513B1Nov 10, 2015
Determining beacon location using magnetic field shape measurements
GARD MICHAEL F0 citations48