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:
Apr. 23, 1996
Filed:
Dec. 30, 1993
Novamax Technologies Holdings, Inc., Ontario, CA;
Abstract
A process for obtaining a range of colors of the visible spectrum includes a first phase to form an anodic film, a second phase to modify a barrier film and a third phase to deposit metallic particles on the barrier film. During the formation of the anodic film, a thickness in excess of 0.3 .mu.m is obtained. The electrolytic modification of the barrier film is carried out in a low dissolving power electrolyte, applying a predetermined low voltage and a predetermined low current density. The third phase is carried out by an electrolytic deposition of metallic particles in order to increase internal reflections under the deposit. The average voltage applied in the electrolytic modification of the barrier film is below 5 volts of a complex alternating current, and the average density of the current applied is less than 200 mA/dm.sup.2 of the complex alternating current.