Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Reexamination Certificate
2007-10-15
2008-12-16
Vortman, Anatoly (Department: 2835)
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
C029S422000, C361S709000, C361S710000, C257S720000, C264S642000
Reexamination Certificate
active
07464462
ABSTRACT:
A method for forming a heat spreading apparatus for semiconductor devices is disclosed. The method includes extruding a frame material to form multiple individual cells including fillable openings within the frame material; filling a first group of the individual cells with one or more high thermal conductivity materials; filling at least a second group of the individual cells with one or more materials of lower thermal conductivity than in the first group of the individual cells; and implementing a reflowing process following filling the multiple individual cells so as to infiltrate the materials within the individual cells, wherein defined walls of the frame material remain following the reflowing.
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Edwards David L.
Fleischman Thomas
Zucco Paul A.
Cantor & Colburn LLP
International Business Machines - Corporation
Petrokaitis Joseph
Vortman Anatoly
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