Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate
2008-11-20
2011-12-06
Neuder, William P (Department: 3672)
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
C175S374000, C051S295000
Reexamination Certificate
active
08069936
ABSTRACT:
Earth-boring tools and components thereof include a particle-matrix composite material having encapsulated diamond particles embedded within a matrix material. Diamonds in the particles comprise less than about 25% by volume of the composite material, the matrix material comprises less than about 50% by volume of the composite material, and encapsulant material surrounding the diamonds at least substantially comprises a remainder of the volume of the composite material. Methods of forming at least a portion of an earth-boring tool include embedding encapsulated diamond particles in a volume of matrix material to form a particle-matrix composite material. The composite material is formed in such a manner as to cause diamonds to comprise less than about 25% of the composite material, the matrix material to comprise less than about 50% of the composite material, and encapsulant material surrounding the diamonds to at least substantially comprise a remainder of the composite material.
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Written Opinion of the International Searching Authority for International Application No. PCT/US2009/063813 dated May 20, 2010, 4 pages.
International Search Report for International Application No. PCT/US2009/063813 dated May 20, 2010, 3 pages.
Fuller Wesley D.
Scott Danny E.
Baker Hughes Incorporated
Hutchins Cathleen
Neuder William P
TraskBritt
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