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:
Aug. 05, 1997
Filed:
Feb. 16, 1996
Applicant:
Inventors:
Nicephoros A Fotinos, Troy, MI (US);
Donald R Vonk, Clinton Township, Macomb County, MI (US);
Ralph C Gray, Butler, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
106 1412 ; 106 1441 ; 106 1442 ; 106 1444 ; 148259 ; 148260 ;
Abstract
Zinc phosphate aqueous coating compositions containing tungsten and using an accelerator which is an oxime, hydroxylamine sulfate or a mixture thereof are disclosed. The accelerators are environmentally friendly and stable in the acidic environment of zinc phosphate coating compositions so as to enable formation of a one-package system. The tungsten component avoids the use of nickel or cobalt ions in the compositions which are environmentally objectionable.