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:
Sep. 06, 1994
Filed:
Jun. 22, 1993
Applicant:
Inventors:
Philip D Deck, Ardsley, PA (US);
Jeffrey I Melzer, Lansdale, PA (US);
William L Harpel, Langhorne, PA (US);
Assignee:
Betz Laboratories, Inc., Trevose, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
148243 ; 148247 ; 148251 ; 148252 ; 148273 ; 148274 ; 148279 ; 106 1411 ; 106 1444 ;
Abstract
An aqueous coating solution for zinc containing metals such as galvanized iron and steel. The coating solution is resistent to the formation of zinc induced sludge and can be operated with little or no overflow. The aqueous treatment solution contains from 0.1 to 10 grams per liter of a fluorometallic acid, from 0.015 to 6 grams per liter of a salt of a transition metal, from 1 to 30 grams per liter zinc; and optionally from 0.1 to 3 grams per liter a polymer of acrylic acid, methacrylic acid, or an ester thereof with a C1 to C8 alkanol.