Coating processes – Coating by vapor – gas – or smoke
Reexamination Certificate
2007-08-07
2007-08-07
Meeks, Timothy (Department: 1762)
Coating processes
Coating by vapor, gas, or smoke
C422S168000, C422S169000, C422S170000, C422S171000, C422S172000, C422S205000, C422S228000, C118S715000, C423S210000, C423S223000
Reexamination Certificate
active
10780341
ABSTRACT:
A system and method for abating a simultaneous flow of silane and arsine contained in an exhaust gas of DRAM processing chamber (12). The system includes a CVD abatement apparatus (20) and a resin-type absorber (22). The CVD abatement apparatus comprises an enclosure (24) that defines a chamber (26) for receiving the exhaust gas. The enclosure contains a plurality of removable substrates (32) arranged as a series of baffles inside the enclosure. As the exhaust gas flows through the CVD abatement apparatus, the silicon within the silane is deposited as a film upon the substrates by chemical vapor deposition. The arsine continues to flow through the CVD apparatus to the absorber where it is adsorbed by the resin contained therein. After the film has reached a particular thickness, the substrates can be removed from the enclosure, cleaned of the film and returned to the enclosure for further use.
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Downs Rachlin & Martin PLLC
Meeks Timothy
Stouffer Kelly M.
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