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:
Feb. 21, 2017
Filed:
Sep. 28, 2007
Mark W. Mcmillen, Cabot, PA (US);
Edward F. Rakiewicz, Gibsonia, PA (US);
Richard F. Karabin, Ruffs Dale, PA (US);
Michelle S. Miles, Mercer, PA (US);
Mark W. McMillen, Cabot, PA (US);
Edward F. Rakiewicz, Gibsonia, PA (US);
Richard F. Karabin, Ruffs Dale, PA (US);
Michelle S. Miles, Mercer, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
Disclosed are methods for treating metal substrates, including ferrous substrates, such as cold rolled steel and electrogalvanized steel. The methods include depositing an electropositive metal onto at least a portion of the substrate, and then contacting the substrate with a pretreatment composition that is substantially free of crystalline phosphates and chromates. The present invention also relates to coated substrates produced thereby.