Abrasive tool making process – material – or composition – Miscellaneous
Reexamination Certificate
2006-12-20
2008-08-05
Lorengo, Jerry (Department: 1793)
Abrasive tool making process, material, or composition
Miscellaneous
C051S308000, C501S089000
Reexamination Certificate
active
07407523
ABSTRACT:
An improved cutting tool insert and a method for the preparation of such cutting tool insert, having a sintered alumina and silicon carbide whisker composite material body, comprising the steps of milling and mixing the powdered starting materials of said composite material and forming said material into a preformed workpiece, heating up said workpiece at a heating rate of from about 20 to about 60° C. per minute to a sintering temperature of between from about 1600 to about 2300° C., and holding at said sintering temperature for a holding time of from about 5 to about 60 minutes at a pressure of between from about 20 to about 100 MPa.
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Drinker Biddle & Reath LLP
Lorengo Jerry
Parvini Pegah
Sandvik Intellectual Property AB
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