High-strength, high-toughness matrix bit bodies

Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions

Reexamination Certificate

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C175S374000, C051S307000

Reexamination Certificate

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10464873

ABSTRACT:
A new composition for forming a matrix body which includes spherical sintered tungsten carbide and an infiltration binder including one or more metals or alloys is disclosed. In some embodiments, the composition may include a Group VIIIB metal selected from one of Ni, Co, Fe, and alloys thereof. Moreover, the composition may also include cast tungsten carbide. In addition, the composition may also include carburized tungsten carbide.

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Canadian Official Action dated Jan. 11, 2006.
Canadian Official Action issued in Application No. 2,442,198 dated Oct. 31, 2006 (2 pages).

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