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Class Information
Number: 175/16
Name: Boring or penetrating the earth > Boring by directly applying heat to fluidize or comminute > Electrically produced heat
Description: Subject matter in which the heat is generated by an electric current either (1) within, or (2) in close proximity to the mineral body being worked.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8701794 High power laser perforating tools and systems Apr. 22, 2014
8662160 Systems and conveyance structures for high power long distance laser transmission Mar. 4, 2014
8636085 Methods and apparatus for removal and control of material in laser drilling of a borehole Jan. 28, 2014
8627901 Laser bottom hole assembly Jan. 14, 2014
8616302 Pulsed electric rock drilling apparatus with non-rotating bit and directional control Dec. 31, 2013
8567522 Apparatus and method for supplying electrical power to an electrocrushing drill Oct. 29, 2013
8567527 System and method for drilling a borehole Oct. 29, 2013
8511401 Method and apparatus for delivering high power laser energy over long distances Aug. 20, 2013
8479841 Assembly for drilling and logging, method for drilling and logging and device for electro pulse drilling Jul. 9, 2013
8424617 Methods and apparatus for delivering high power laser energy to a surface Apr. 23, 2013
8186454 Apparatus and method for electrocrushing rock May. 29, 2012
8172006 Pulsed electric rock drilling apparatus with non-rotating bit May. 8, 2012
8109345 System and method for drilling a borehole Feb. 7, 2012
8083008 Pressure pulse fracturing system Dec. 27, 2011
7802384 Method and device for excavating submerged stratum Sep. 28, 2010
7784563 Method, drilling machine, drill bit and bottom hole assembly for drilling by electrical discharge by electrical discharge pulses Aug. 31, 2010
7669937 Continuous extraction of underground narrow-vein metal-bearing deposits by thermal rock fragmentation Mar. 2, 2010
7559378 Portable and directional electrocrushing drill Jul. 14, 2009
7546880 Extracting gas hydrates from marine sediments Jun. 16, 2009
7530406 Method of drilling using pulsed electric drilling May. 12, 2009
7527108 Portable electrocrushing drill May. 5, 2009
7416032 Pulsed electric rock drilling apparatus Aug. 26, 2008
7377593 Continous extraction of underground narrow-vein metal-bearing deposits by thermal rock fragmentation May. 27, 2008
7334637 Assembly and method for determining thermal properties of a formation and forming a liner Feb. 26, 2008
7270195 Plasma channel drilling process Sep. 18, 2007
7195320 Thermal rock fragmentation application in narrow vein extraction Mar. 27, 2007
7147064 Laser spectroscopy/chromatography drill bit and methods Dec. 12, 2006
6913320 Thermal rock fragmentation application in narrow vein extraction Jul. 5, 2005
6912356 Method and apparatus for fracturing brittle materials by thermal stressing Jun. 28, 2005
6761416 Method and apparatus for a plasma-hydraulic continuous excavation system Jul. 13, 2004
6755262 Downhole lens assembly for use with high power lasers for earth boring Jun. 29, 2004
6626249 Dry geothermal drilling and recovery system Sep. 30, 2003
6608967 Method and apparatus for fracturing brittle materials by thermal stressing Aug. 19, 2003
6591920 Moulten bath drilling method Jul. 15, 2003
6457778 Electro-power impact cell for plasma blasting Oct. 1, 2002
6283555 Plasma blasting with coaxial electrodes Sep. 4, 2001
6164388 Electropulse method of holes boring and boring machine Dec. 26, 2000
5896938 Portable electrohydraulic mining drill Apr. 27, 1999
5735355 Rock melting tool with annealer section Apr. 7, 1998
5573307 Method and apparatus for blasting hard rock Nov. 12, 1996
5482357 Plasma blasting probe assembly Jan. 9, 1996
5479994 Method of electrothermomechanical drilling and device for its implementation Jan. 2, 1996
5425570 Method and apparatus for plasma blasting Jun. 20, 1995
5211156 Method and apparatus for treating a surface of granite with a high temperature plasma jet May. 18, 1993
5168939 Electromagnetically accelerated impact oil well drill Dec. 8, 1992
5107936 Rock melting excavation process Apr. 28, 1992
5106164 Plasma blasting method Apr. 21, 1992
5060287 Heater utilizing copper-nickel alloy core Oct. 22, 1991
4776638 Method and apparatus for conversion of coal in situ Oct. 11, 1988
4741405 Focused shock spark discharge drill using multiple electrodes May. 3, 1988

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