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:
Dec. 14, 1993
Filed:
Jun. 05, 1992
Calvin C Fong, Beverly Hills, CA (US);
Rimas Viktora, Redondo Beach, CA (US);
Northrop Corporation, Los Angeles, CA (US);
Abstract
The invention is a single-bath electrolytic de-oxidation and anodization process in which a workpiece surface such as an aluminum surface is electrolytically de-oxidized and then anodized to form an adhesive oxide layer in the same electrolytic chemical bath without removing the workpiece from the bath. Upon completion of the anodization step, the piece is rinsed in a water bath. The invention further includes recirculating the electrolytic bath through a filter to suppress contaminant levels in the bath to prevent metal ion or organic contaminants from the de-oxidation step from compromising the integrity of the anodization step.