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Class Information
Number: 102/312
Name: Ammunition and explosives > Blasting > Patterned blasting > Borehole arrangement
Description: Subject matter wherein a blasting charge is in each of several boreholes.


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7387162 Apparatus and method for selective actuation of downhole tools Jun. 17, 2008
7331291 Self-supporting air tube for blasting Feb. 19, 2008
7156023 Method for installing an ignition system, and ignition system Jan. 2, 2007
7107908 Firing-readiness diagnostic of a pyrotechnic device such as an electronic detonator Sep. 19, 2006
7086334 Staggered charging of slave devices such as in an electronic blasting system Aug. 8, 2006
6959765 Explosive pipe severing tool Nov. 1, 2005
6926096 Method for using a well perforating gun Aug. 9, 2005
6896059 Components and methods for use with explosives May. 24, 2005
6817298 Solid propellant gas generator with adjustable pressure pulse for well optimization Nov. 16, 2004
6805056 Method and apparatus for removing abandoned tubular members Oct. 19, 2004
6772105 Blasting method Aug. 3, 2004
6758124 Unique phasings and firing sequences for perforating guns Jul. 6, 2004
6679175 Cartridge and method for small charge breaking Jan. 20, 2004
6651564 High energy explosive for seismic methods Nov. 25, 2003
6644202 Blasting arrangement Nov. 11, 2003
6631684 Rock blasting method using air bladders embedded in loading layers Oct. 14, 2003
6591911 Multi-directional gun carrier method and apparatus Jul. 15, 2003
6557448 Method of and system for delivery of water-based explosives May. 6, 2003
6554081 Components and methods for use with explosives Apr. 29, 2003
6536349 Explosive system for casing damage repair Mar. 25, 2003
6527345 Method for excavating a tunnel rock face by drilling a pattern of lifter and line holes Mar. 4, 2003
6523474 Shaped recesses in explosive carrier housings that provide for improved explosive performance Feb. 25, 2003
6523449 Perforating gun Feb. 25, 2003
6520089 Method for setting and igniting a charge of explosives for geological investigations and explosive device associated therewith Feb. 18, 2003
6520258 Encapsulant providing structural support for explosives Feb. 18, 2003
6505559 Well bore cutting and perforating devices and methods of manufacture Jan. 14, 2003
6499406 Blasting apparatus for forming horizontal underground cavities and blasting method using the same Dec. 31, 2002
6487973 Method and apparatus for locking charges into a charge holder Dec. 3, 2002
6460463 Shaped recesses in explosive carrier housings that provide for improved explosive performance in a well Oct. 8, 2002
6460462 Method of blasting of rock mass Oct. 8, 2002
6453818 Method of controlled blasting Sep. 24, 2002
6454359 Method for blasting tunnels using an air bladder Sep. 24, 2002
6439121 Perforating charge carrier and method of assembly for same Aug. 27, 2002
6435096 Method and apparatus for controlled small-charge blasting by decoupled explosive Aug. 20, 2002
6431075 Center-cut method for tunnel excavation utilizing large unloaded blast holes and a circular pre-split Aug. 13, 2002
6422148 Impermeable and composite perforating gun assembly components Jul. 23, 2002
6422147 Sequential detonation of explosive charges Jul. 23, 2002
6412415 Shock and vibration protection for tools containing explosive components Jul. 2, 2002
6412388 Safety arming device and method, for perforation guns and similar devices Jul. 2, 2002
6397752 Method and apparatus for coupling explosive devices Jun. 4, 2002
6397754 Method and apparatus for charging boreholes with explosives Jun. 4, 2002
6397719 Method for loading slurry explosives in blast holes or cartridges Jun. 4, 2002
6386111 Stemming arrangement and method for blast holes May. 14, 2002
6339992 Small charge blasting apparatus including device for sealing pressurized fluids in holes Jan. 22, 2002
6336408 Cooling system for downhole tools Jan. 8, 2002
6332401 Method and apparatus for pressure wave suppression in small-charge blasting Dec. 25, 2001
6330860 Method of blasting using air tubes charged in a blasthole Dec. 18, 2001
6321655 Method and apparatus for flyrock control in small charge blasting Nov. 27, 2001
6318272 Breaking or blasting or splitting of rock Nov. 20, 2001
6286430 Device for the pyrotechnic cutting of non-metallic parts Sep. 11, 2001

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