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:
Aug. 22, 2000
Filed:
Apr. 30, 1997
Rolin W Sugg, Reading, PA (US);
Richard P Welty, Boulder, CO (US);
Stephen R Moysan, III, Douglasville, PA (US);
Masco Corporation, Taylor, MI (US);
Abstract
An article, particularly a brass article, is coated with a multi-layer coating comprising a semi-bright nickel layer deposited on the surface of the article, a bright nickel layer deposited on the semi-bright nickel layer, a nickel-tungsten-boron layer deposited on the bright nickel layer, a chrome layer deposited on the nickel-tungsten-boron layer, a layer comprised of a non-precious refractory metal deposited on the chrome layer, a sandwich layer comprised of alternating layers of non-precious refractory metal compound, preferably zirconium nitride, and non-precious refractory metal, preferably zirconium, deposited on the non-precious refractory metal layer, a non-precious refractory metal compound such as zirconium nitride deposited on the sandwich layer, and a layer comprised of a non-precious refractory metal oxide or the reaction products of a non-precious refractory metal, oxygen and nitrogen deposited on the non-precious refractory metal compound layer. The coating provides the color of brass to the article and also provides abrasion and corrosion protection.