Abrasive tool making process – material – or composition – Miscellaneous
Reexamination Certificate
2007-04-03
2011-11-08
Lorengo, Jerry (Department: 1731)
Abrasive tool making process, material, or composition
Miscellaneous
C051S307000, C419S011000
Reexamination Certificate
active
08052765
ABSTRACT:
Contoured solid polycrystalline superabrasive material such as twist drill tips and endmill flank segments can be formed by preparing a precursor mold having a plurality of shaped openings each corresponding to a predetermined shape. A specially prepared charge feed can be placed into the shaped openings to form a charged precursor. The charge feed can include a substantially homogeneous mixture of superabrasive source particulates, sintering binder, and optional inorganic bonding medium. A loaded reaction cup-assembly including the charged precursor can be subjected to a pressure, temperature and time sufficient for sintering and formation of the contoured polycrystalline superabrasive material. Reduced finishing steps and increased tailorability of grade and quality of final polycrystalline products can be readily achieved.
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Cho H. Sam
Il Kim yong
Jeon Song Ki
Kyu Lee bong
Ryul Han Kyung
Lorengo Jerry
Thorpe North & Western LLP
Wood Jared
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