Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Temperature control
Reexamination Certificate
2007-08-21
2007-08-21
Heitbrink, Tim (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Temperature control
C425S338000, C425S384000, C425S388000
Reexamination Certificate
active
10942559
ABSTRACT:
An apparatus for flattening sintered ceramic electronic packaging substrates having opposing faces with undesired camber interleaves the substrates with spacers. At least one heating zone includes a heat transfer medium movable toward and away from the stack of interleaved ceramic substrates and spacers to apply a desired rate of heat by direct contact with or close proximity to sides of the stack. A plunger applies pressure to the stack in a direction normal to the faces of the substrates. At least one cooling zone includes a heat transfer medium movable toward and away from the stack to remove heat introduced in the heating zone by direct contact with or close proximity to sides of the stack. A reducing gas supply is operatively connected to the at least one heating zone and at least one cooling zone to supply gas to maintain a controlled reducing atmosphere within the apparatus.
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Bezama Raschid J
Weisman Renee L
Blecker Ira D.
DeLio & Peterson LLC
Heitbrink Tim
International Business Machines - Corporation
Nguyen Thu Khanh T.
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