Coating processes – Vacuum utilized prior to or during coating
Reexamination Certificate
2008-01-29
2008-01-29
Wong, Edna (Department: 1753)
Coating processes
Vacuum utilized prior to or during coating
C427S238000, C427S331000, C427S372200, C205S188000, C205S189000, C205S190000, C205S198000, C205S200000, C205S201000, C205S204000, C205S322000, C205S324000, C205S325000, C205S333000
Reexamination Certificate
active
07323221
ABSTRACT:
The present invention relates to a process for the coating of objects made of valve metals or their alloys with a thin barrier layer consisting of the metal and an oxide ceramic layer provided thereon whose surface has been coated with fluoropolymers, characterized in that the fluoropolymers are introduced into the capillary system of the oxide ceramic layer in the form of a solution by vacuum impregnation, followed by removing the non-wetting portions of the solution and drying.
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Zhits et al., “Nonstick Protective Coatings for Steam-Turbine Condenser Tubes”, Tyazheloe Mashinostroenie (no month, 1993), vol. 10, pp. 19-24, Abstract Only.
International Search Report for PCT/EP02/14375; ISA/EPO/210; Mailed: Apr. 29, 2003.
Heppekausen Josef
Schulte Frank
Harness Dickey & Pierce PLC
Leybold Vakuum GmbH
Wong Edna
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