Assignee
STOLAR INC
US30 patents
Top patents by PatentIndex Score
US5087099AFeb 11, 1992
Long range multiple point wireless control and monitoring system
STOLAR INC153 citations99
US4968978ANov 6, 1990
Long range multiple point wireless control and monitoring system
STOLAR INC166 citations99
US5769503AJun 23, 1998
Method and apparatus for a rotating cutting drum or arm mounted with paired opposite circular polarity antennas and resonant microstrip patch transceiver for measuring coal, trona and potash layers forward, side and around a continuous mining machine
STOLAR INC69 citations96
US5268683ADec 7, 1993
Method of transmitting data from a drillhead
STOLAR INC102 citations96
US5260660ANov 9, 1993
Method for calibrating a downhole receiver used in electromagnetic instrumentation for detecting an underground conductor
STOLAR INC63 citations96
US4742305AMay 3, 1988
Method for constructing vertical images of anomalies in geological formations
STOLAR INC55 citations96
US5686841ANov 11, 1997
Apparatus and method for the detection and measurement of liquid water and ice layers on the surfaces of solid materials
STOLAR INC100 citations94
US4753484AJun 28, 1988
Method for remote control of a coal shearer
STOLAR INC82 citations94
US5181934AJan 26, 1993
Method for automatically adjusting the cutting drum position of a resource cutting machine
STOLAR INC38 citations93
US5146611ASep 8, 1992
Mine communication cable and method for use
STOLAR INC27 citations93
US5121971AJun 16, 1992
Method of measuring uncut coal rib thickness in a mine
STOLAR INC28 citations93
US5066917ANov 19, 1991
Long feature vertical or horizontal electrical conductor detection methodology using phase coherent electromagnetic instrumentation
STOLAR INC54 citations93
US4994747AFeb 19, 1991
Method and apparatus for detecting underground electrically conductive objects
STOLAR INC56 citations93
US4577153AMar 18, 1986
Continuous wave medium frequency signal transmission survey procedure for imaging structure in coal seams
STOLAR INC44 citations93
US4879755ANov 7, 1989
Medium frequency mine communication system
STOLAR INC105 citations92
US7656342B2Feb 2, 2010
Double-sideband suppressed-carrier radar to null near-field reflections from a first interface between media layers
STOLAR INC37 citations91
US5188426AFeb 23, 1993
Method for controlling the thickness of a layer of material in a seam
STOLAR INC21 citations91
US5072172ADec 10, 1991
Method and apparatus for measuring the thickness of a layer of geologic material using a microstrip antenna
STOLAR INC40 citations91
US7659847B2Feb 9, 2010
Radar mining guidance control system
STOLAR INC48 citations90
US5301082AApr 5, 1994
Current limiter circuit
STOLAR INC23 citations89
US5093929AMar 3, 1992
Medium frequency mine communication system
STOLAR INC47 citations89
US7675289B1Mar 9, 2010
Underground anomalies detection vehicle and trailer
STOLAR INC40 citations88
US9356706B2May 31, 2016
First responder and mine emergency communication
STOLAR INC9 citations84
US9207316B2Dec 8, 2015
Radar for rejecting and looking past surface reflections
STOLAR INC7 citations83
US7629790B2Dec 8, 2009
System for electronic detection of military threats
STOLAR INC9 citations83
US7548181B1Jun 16, 2009
Earth-penetrating radar with inherent near-field rejection
STOLAR INC15 citations83
US4691166ASep 1, 1987
Electromagnetic instruments for imaging structure in geologic formations
STOLAR INC21 citations82
US5185578AFeb 9, 1993
Method for detecting anomalous geological zones by transmitting electromagnetic energy between spaced drillholes using different frequency ranges
STOLAR INC34 citations81
US7755235B2Jul 13, 2010
Downhole generator for drillstring instruments
STOLAR INC5 citations59
USD325202SApr 7, 1992
Mobile transceiver
STOLAR INC1 citations48