The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 1985
Filed:
Apr. 20, 1984
Robert A Tremmel, Woodhaven, MI (US);
Doina Magda, Grosse Pointe Park, MI (US);
OMI International Corporation, Warren, MI (US);
Abstract
An improved process for producing a composite nickel-containing electroplate on a substrate including an inner nickel-containing layer, of an average sulfur content of less than about 0.03 percent by weight, an intermediate nickel-containing layer of an average sulfur content of about 0.05 to about 0.5 percent by weight and an adjacent adherent outer nickel layer of an average sulfur content of about 0.02 to about 0.15 percent but less in sulfur than the intermediate layer and higher in sulfur than the inner layer. The controlled amount of sulfur is introduced into at least the intermediate layer by employing an aqueous acidic nickel solution containing a controlled amount of a thiazole and/or thiazoline additive compound so as to provide an intermediate nickel-containing deposit containing the specified average sulfur content.