Cutting structures

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United States of America Patent

PATENT NO 8197936
APP PUB NO 20090022952A1
SERIAL NO

12236083

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Abstract

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A polycrystalline diamond compact cutter that includes a thermally stable polycrystalline diamond layer, a carbide substrate, and a polycrystalline cubic boron nitride layer interposed between the thermally stable polycrystalline diamond layer and the carbide substrate such that at least a portion of the polycrystalline cubic boron nitride layer is radially surrounded by the thermally stable polycrystalline diamond layer is disclosed.

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Patent Owner(s)

  • SMITH INTERNATIONAL, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Keshavan, Madapusi K The Woodlands, US 126 6014

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