Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Reexamination Certificate
2005-03-15
2005-03-15
Turner, Archene (Department: 1775)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
C428S332000, C428S212000, C428S469000, C428S472000, C428S312200, C428S312800, C428S315500, C428S697000, C428S698000, C428S699000, C428S701000, C428S702000, C407S119000, C051S307000, C051S309000
Reexamination Certificate
active
06866921
ABSTRACT:
A coated cemented (binder alloy, e.g., cobalt-chromium alloy) tungsten carbide cutting insert that comprises a substrate and a coating. The substrate contains at least about 70 weight percent tungsten and carbon, between about 3 weight percent and about 12 weight percent cobalt, and at least 0.09 weight percent chromium. The substrate presents a surface zone of binder alloy enrichment that begins near (or at) and extends inwardly from a peripheral surface of the substrate. The coating includes a base layer that contains chromium.
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Grab George P.
Greenfield Mark S.
Santhanam Anakkavur T.
Kennametal Inc.
Prizzi John J.
Turner Archene
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