Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Reexamination Certificate
2006-02-24
2009-11-24
Doerrler, William C (Department: 3744)
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
C062S643000, C062S907000, C062S911000
Reexamination Certificate
active
07621152
ABSTRACT:
A cryogenic plant having at least two direct phase separation devices such as distillation columns whose circular perimeters serve to define the perimeter of the cold box encompassing the direct phase separation devices and ancillary equipment for the process.
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Doerrler William C
Praxair Technology Inc.
Rosenblum David M.
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