Cleaning and liquid contact with solids – Processes – Using solid work treating agents
Reexamination Certificate
2011-03-22
2011-03-22
Carrillo, Sharidan (Department: 1711)
Cleaning and liquid contact with solids
Processes
Using solid work treating agents
C134S006000, C134S008000, C134S022100, C134S022110, C134S022120, C134S022140, C134S022180, C134S022190, C134S026000, C134S027000, C134S028000, C134S029000, C134S034000, C134S036000, C134S040000, C134S041000, C134S042000
Reexamination Certificate
active
07909935
ABSTRACT:
The present invention is directed to a method of cleaning an interior surface of a fluid delivery system. The method comprises introducing a first liquid into the fluid delivery system and contacting the interior surface with the first liquid; forming a slurry by introducing a particulate into the first liquid and contacting the interior surface with the slurry; introducing a second liquid into the fluid delivery system and contacting the interior surface with the second liquid; and introducing a third liquid into the fluid delivery system and contacting the interior surface with the third liquid. The first liquid is substantially soluble or substantially insoluble in the second liquid, the second liquid is substantially insoluble in the third liquid, and the particulate is substantially insoluble in the first and second liquids and substantially soluble in the third liquid.
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Beauchamp Phillip J.
Bergishagen Finn
Palumbo Denise A.
Warren Jonathan N.
Carrillo Sharidan
Hays Steven W.
PPG Industries Ohio Inc.
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