Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate
2011-04-05
2011-04-05
Souw, Bernard E (Department: 2881)
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
C175S420200, C175S430000, C427S249800
Reexamination Certificate
active
07918293
ABSTRACT:
Methods of evaluating a superabrasive volume or a superabrasive compact are disclosed. One method may comprise exposing a superabrasive volume to beta particles and detecting a quantity of scattered beta particles. Further, a boundary may be perceived between a first region and a second region of the superabrasive volume in response to detecting the quantity of scattered beta particles. In another embodiment, a boundary between a catalyst-containing region and a catalyst-diminished region of a polycrystalline diamond volume may be perceived. In a further embodiment, a boundary may be perceived between a catalyst-containing region and a catalyst-diminished region of a polycrystalline diamond compact. Additionally, a depth to which a catalyst-diminished region extends within a polycrystalline diamond volume of a polycrystalline diamond compact may be measured in response to detecting a quantity of scattered beta particles. A system configured to evaluate a superabrasive volume is disclosed.
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Holland & Hart LLP
Souw Bernard E
US Synthetic Corporation
LandOfFree
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