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Class Information
Number: 175/425
Name: Boring or penetrating the earth > Bit or bit element > Specific or diverse material
Description: Apparatus in which the bit or any portion thereof is composed of either (1) two different materials, (2) a single material which has been treated to provide portions of the bit with specific properties which are different from the properties of another portion or (3) a particular material to which significance is attributed.

Sub-classes under this class:

Class Number Class Name Patents
175/434 Diamond 345
175/426 Insert 403
175/435 Welded, brazed, or soldered 89

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8689909 Inserts, polycrystalline diamond compact cutting elements, earth-boring bits comprising same, and methods of forming same Apr. 8, 2014
8689910 Impregnation bit with improved cutting structure and blade geometry Apr. 8, 2014
8662207 Rotary drag bits including abrasive-impregnated cutting structures Mar. 4, 2014
8662209 Backfilled polycrystalline diamond cutter with high thermal conductivity Mar. 4, 2014
8616307 Thermally stable diamond bonded materials and compacts Dec. 31, 2013
8617289 Hardfacing compositions for earth boring tools Dec. 31, 2013
8602133 Tool with welded cemented metal carbide inserts welded to steel and/or cemented metal carbide Dec. 10, 2013
8602129 Matrix body fixed cutter bits Dec. 10, 2013
8590646 Impregnated cutting elements with large abrasive cutting media and methods of making and using the same Nov. 26, 2013
8579052 Polycrystalline compacts including in-situ nucleated grains, earth-boring tools including such compacts, and methods of forming such compacts and tools Nov. 12, 2013
8573332 Methods of forming polycrystalline diamond cutting elements, cutting elements so formed and drill bits so equipped Nov. 5, 2013
8567531 Cutting elements, methods for manufacturing such cutting elements, and tools incorporating such cutting elements Oct. 29, 2013
8561731 Hardmetal for use in oil and gas drilling applications Oct. 22, 2013
8540036 Ultrahard sintered carbide particles in hardfacing for earth-boring bit Sep. 24, 2013
8535408 High thermal conductivity hardfacing Sep. 17, 2013
8517125 Impregnated material with variable erosion properties for rock drilling Aug. 27, 2013
8505654 Polycrystalline diamond Aug. 13, 2013
8501144 Polycrystalline diamond apparatuses and methods of manufacture Aug. 6, 2013
8479846 Earth-boring tools including an impact material and methods of drilling through casing Jul. 9, 2013
8464814 Systems for manufacturing downhole tools and downhole tool parts Jun. 18, 2013
8459380 Earth-boring bits and other parts including cemented carbide Jun. 11, 2013
8408338 Impregnated rotary drag bit with enhanced drill out capability Apr. 2, 2013
8403080 Earth-boring tools and components thereof including material having hard phase in a metallic binder, and metallic binder compositions for use in forming such tools and components Mar. 26, 2013
8397841 Drill bit with cutting elements having functionally engineered wear surface Mar. 19, 2013
8381845 Infiltrated carbide matrix bodies using metallic flakes Feb. 26, 2013
8381844 Earth-boring tools and components thereof and related methods Feb. 26, 2013
8365845 High impact resistant tool Feb. 5, 2013
8365846 Polycrystalline diamond cutter with high thermal conductivity Feb. 5, 2013
8360169 Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use Jan. 29, 2013
8347990 Matrix bit bodies with multiple matrix materials Jan. 8, 2013
8322465 Earth-boring bit parts including hybrid cemented carbides and methods of making the same Dec. 4, 2012
8317893 Downhole tool parts and compositions thereof Nov. 27, 2012
8309018 Earth-boring rotary drill bits and methods of manufacturing earth-boring rotary drill bits having particle-matrix composite bit bodies Nov. 13, 2012
8276691 Rotary drill bit including at least one superabrasive cutting element having a diamond-silicon carbide composite table Oct. 2, 2012
8267203 Earth-boring tools and components thereof including erosion-resistant extensions, and methods of forming such tools and components Sep. 18, 2012
8268452 Bonding agents for improved sintering of earth-boring tools, methods of forming earth-boring tools and resulting structures Sep. 18, 2012
8245797 Cutting structures for casing component drillout and earth-boring drill bits including same Aug. 21, 2012
8225890 Impregnated bit with increased binder percentage Jul. 24, 2012
8225886 Earth-boring bits and other parts including cemented carbide Jul. 24, 2012
8220566 Carburized monotungsten and ditungsten carbide eutectic particles, materials and earth-boring tools including such particles, and methods of forming such particles, materials, and tools Jul. 17, 2012
8210287 Mining core drill bit and method of making thereof Jul. 3, 2012
8210288 Rotary drill bits with protected cutting elements and methods Jul. 3, 2012
8201648 Earth-boring particle-matrix rotary drill bit and method of making the same Jun. 19, 2012
8182778 Boron carbide and method for making same May. 22, 2012
8172914 Infiltration of hard particles with molten liquid binders including melting point reducing constituents, and methods of casting bodies of earth-boring tools May. 8, 2012
8147790 Methods of fabricating polycrystalline diamond by carbon pumping and polycrystalline diamond products Apr. 3, 2012
8141656 Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use Mar. 27, 2012
8109349 Thick pointed superhard material Feb. 7, 2012
8109350 Polycrystalline abrasive composite cutter Feb. 7, 2012
8104550 Methods for applying wear-resistant material to exterior surfaces of earth-boring tools and resulting structures Jan. 31, 2012

1 2 3 4 5

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