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:
Jan. 06, 2026
Filed:
Jul. 31, 2023
Henkel Ag & Co. Kgaa, Duesseldorf, DE;
Henkel AG & Co. KGaA, Duesseldorf, DE;
Abstract
An aqueous passivation composition for treatment of zinc or zinc alloy coatings is provided that is substantially free of nitrate anions and hexavalent chromium, said composition having a pH of less than 3 and comprising: i) a source of trivalent chromium (Cr(III)) ions; ii) at least one α-hydroxycarboxylic acid represented by the General Formula (I): RCH(OH)COOH (I), where Rrepresents a hydrogen atom, a C-Calkyl group, a C-Calkenyl group, a C-Calkoxy group, a C-Ccycloalkyl group or a C-Caryl group; iii) phosphoric acid; iv) at least one compound having both a thiol group (—SH) and a carboxyl group (—COH); and v) at least one water-soluble or water-dispersible fluoroacid or a salt of Ti, Zr, Hf, Si, Sn, Al, Ge, and B.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile