Pipes and tubular conduits – With flow regulators and/or baffles – Flow facilitating
Reexamination Certificate
2005-01-25
2005-01-25
Hook, James (Department: 3752)
Pipes and tubular conduits
With flow regulators and/or baffles
Flow facilitating
C138S038000
Reexamination Certificate
active
06845788
ABSTRACT:
A fluid handling component having a durable ultraphobic fluid contact surface that is capable of exhibiting ultraphobic properties at liquid pressures of one atmosphere and above. The surface generally includes a substrate portion with a multiplicity of projecting regularly shaped microscale or nanoscale asperities disposed so that the surface has a predetermined contact line density measured in meters of contact line per square meter of surface area equal to or greater than a contact line density value “ΛL” determined according to the formula:ΛL=-10,330γcos(θa,0+ω-90°)where γ is the surface tension of the liquid in Newtons per meter, θa,0is the experimentally measured true advancing contact angle of the liquid on the asperity material in degrees, and ω is the asperity rise angle in degrees.
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Entegris, Inc.
Hook James
Patterson Thuente Skaar & Christensen P.A.
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