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:
May. 07, 2019
Filed:
Dec. 22, 2014
Protocol Environmental Solutions Inc., Coquitlam, CA;
Sergio Vitomir, New Westminster, CA;
Protocol Environmental Solutions, Inc., Coquitlam, BC, CA;
Abstract
Various compositions and methods are disclosed for treatment of heat tints on stainless steel surfaces that allow for simultaneous pickling and passivation of stainless steel. Moreover, contemplated compositions and methods are free or substantially free of hydrofluoric acid and can be applied in various forms at different temperatures. In further preferred aspects of the inventive subject matter, the compositions contemplated herein include magnesium salts of acids, and especially magnesium salts of hydrofluoric and nitric acid, most typically in an aqueous base. Such compositions are significantly safer for a user and disposal. Where desired, additional ingredients may be added, including surfactants, chelators, thickeners, and/or fillers.