Metal working – Scale remover or preventor
Reexamination Certificate
2003-03-26
2010-06-08
Bryant, David P (Department: 3726)
Metal working
Scale remover or preventor
C029S081080, C219S069120, C219S069170, C076S107100
Reexamination Certificate
active
07730597
ABSTRACT:
A molten residual layer formed on a surface26of an electric-discharge machined portion12of a metal molding member1is eliminated by using a tool70made by a wire discharge grinding method. According to the wire discharge grinding method, a minute tool which high in processing accuracy and high in hardness can be obtained. Since the molten residual layer formed on a surface26of the portion12due to the electric-discharge machining is eliminated by using the tool, the molten residual layer can be eliminated uniformly with high accuracy.
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Hamano Hidemitsu
Hiramoto Kimihisa
Afzali Sarang
Bryant David P
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Showa Denko K. K.
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