Method of protecting galvanized steel from corrosion
Patent 5068134 Issued on November 26, 1991. Estimated Expiration Date: 
December 19, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 19, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2859146 2952562 3383189 3849141 Steel sheets and method of treating steel sheets Corrosion resistant galvanic coating Non-chromate conversion coatings Silicate coated metal tying wire and process for coating said wire Aqueous dispersion for metal coating from colloidal silica, alkoxy silane, and polymer Silicate treatment for coated substrate InventorsAssigneeApplicationNo. 453334 filed on 12/19/1989US Classes:427/376.2, Metal oxide- or silicon-containing coating (e.g., glazed, vitreous enamel, etc.)427/376.4, Metal base427/387, Silicon compound containing coating427/397.7, Inorganic silicon-containing coating427/397.8, Alkali silicate427/406, Zinc coating427/419.1, Metallic compound-containing coating427/419.2, Oxide-containing coating427/431, Molten metal or fused salt bath427/433, Lead, zinc, or tin coating (e.g., galvanizing, etc.)427/436Metal coatingExaminersPrimary: Beck, ShriveAssistant: Burke, Margaret Attorney, Agent or FirmForeign Patent References
International ClassesB05D 001/18B05D 001/36 C23C 002/06 AbstractThis invention is directed to a process of protecting galvanized metal from white rust corrosion which comprises treating the galvanized metal, i.e., zinc-containing coating, at a temperature above about 125° C. with at least one silica compound.Other References
Field of SearchMetal baseSilicon compound containing coating Inorganic silicon-containing coating Alkali silicate Metal oxide- or silicon-containing coating (e.g., glazed, vitreous enamel, etc.) Zinc coating Molten metal or fused salt bath Lead, zinc, or tin coating (e.g., galvanizing, etc.) Metal coating Metallic compound-containing coating Oxide-containing coating | |
