Coated article having a base of age-hardened metal
Patent 4956026 Issued on September 11, 1990. Estimated Expiration Date: 
May 8, 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.
May 8, 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 2608753 3134701 3157539 3607150 3622285 Gold-plated electronic components Electrical contact means with gold-nickel alloy overlay Process of manufacturing strip coated with precious metal as a semifinished product for making electric contacts Process for obtaining a composite material and composite material obtained by said process Patent #: 4551184 InventorAssigneeApplicationNo. 348941 filed on 05/08/1989US Classes:148/518, With electrocoating (e.g., electroplating, anodizing, sputtering, etc.)148/527, With metal next to or bonded to metal148/532, Copper(Cu) or copper base alloy148/536Copper(Cu) or copper base alloyExaminersPrimary: Zimmerman, John J.Attorney, Agent or FirmForeign Patent References
International ClassesC22F 001/08C22F 001/10 C22F 001/14 C21D 009/00 Foreign Application Priority Data1987-07-04 CAAbstractA structure comprising a base of an age-hardened alloy having on at least part of the surface thereof a layer of precious metal. The precious metal, e.g. gold, contains amounts of nickel grading downwardly from the inner surface of the precious metal layer such that the outer surface contains about 1% to about 10% nickel. The process of making such a structure is also disclosed.Other References
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