Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2004-11-18
2008-03-25
Lavilla, Michael E. (Department: 1794)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S215000, C428S336000, C428S469000, C428S653000, C428S659000, C428S681000
Reexamination Certificate
active
07348068
ABSTRACT:
A surface-treated steel sheet includes a steel sheet; a plating layer containing at least one metal selected from zinc and aluminum; a first layer film containing (α) 1 to 2000 mg/m2of silica in terms of SiO2, (β) a total of 1 to 1000 mg/m2of phosphoric acid groups in terms of P, (γ) a total of 0.5 to 800 mg/m2of at least one metal selected from Mg, Mn, and Al, and (δ) 0.1 to 50 mg/m2of a tetravalent vanadium compound; and a second layer film formed to a thickness of 0.1 to 5 μm on the first layer film and containing a resin (A) having at least one type of functional group selected from OH and COOH groups, and at least one rust-proofing additive (B) selected from (a) a phosphate, (b) Ca ion-exchanged silica, (c) a molybdate, (d) silicon oxide, and (e) at least one organic compound selected from triazoles, thiols, thiadiazoles, thiazoles, and thiurams.
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Matsuda Takeshi
Matsuzaki Akira
Okai Kazuhisa
DLA Piper (US) LLP
JFE Steel Corporation
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