Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate
2008-02-15
2010-10-05
Thompson, Kenneth (Department: 3672)
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
C175S428000
Reexamination Certificate
active
07806206
ABSTRACT:
Embodiments of the present invention relate to superabrasive materials, superabrasive compacts employing such superabrasive materials, and methods of fabricating such superabrasive materials and compacts. In one embodiment, a superabrasive material includes a matrix comprising a plurality of coarse-sized superabrasive grains, with the coarse-sized superabrasive grains exhibiting a coarse-sized average grain size. The superabrasive material further includes a plurality of superabrasive regions dispersed within the matrix, with each superabrasive region including a plurality of fine-sized superabrasive grains exhibiting a fine-sized average grain size less than the coarse-sized average grain size. In another embodiment, the superabrasive materials may be employed in a superabrasive compact. The superabrasive compact comprises a substrate including a superabrasive table comprising any of the disclosed superabrasive materials. Further embodiments are directed to applications utilizing the disclosed superabrasive articles in applications, such as rotary drill bits.
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Thompson Kenneth
US Synthetic Corporation
Workman Nydegger
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