Cleaning and liquid contact with solids – Processes – With treating fluid motion
Reexamination Certificate
2007-10-16
2007-10-16
Kornakov, M. (Department: 1746)
Cleaning and liquid contact with solids
Processes
With treating fluid motion
C134S002000, C134S003000, C134S010000, C134S011000, C134S012000, C134S025400, C134S031000, C134S035000, C134S042000, C438S906000
Reexamination Certificate
active
10253296
ABSTRACT:
Method for processing an article by contacting the article with a dense fluid. The article is introduced into a sealable processing chamber and the processing chamber is sealed. A dense fluid is prepared by introducing a subcritical fluid into a pressurization vessel and isolating the vessel, and then heating the subcritical fluid at essentially constant volume and essentially constant density to yield a dense fluid. At least a portion of the dense fluid is transferred from the pressurization vessel to the processing chamber, wherein the transfer of the dense fluid is driven by the difference between the pressure in the pressurization vessel and the pressure in the processing chamber, thereby pressurizing the processing chamber with transferred dense fluid. The article is contacted with the transferred dense fluid to yield a spent dense fluid and a treated article, and the spent dense fluid is separated from the treated article.
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McDermott Wayne Thomas
Ockovic Richard Carl
Schwarz Alexander
Air Products and Chemicals Inc.
Chase Geoffrey L.
Kornakov M.
Yang Lina
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