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:
Mar. 17, 2015
Filed:
May. 23, 2008
Applicants:
Andrea Keys, Yardley, PA (US);
Jeffrey I. Melzer, Lansdale, PA (US);
Michael T. Raab, Langhorne, PA (US);
Inventors:
Andrea Keys, Yardley, PA (US);
Jeffrey I. Melzer, Lansdale, PA (US);
Michael T. Raab, Langhorne, PA (US);
Assignee:
Chemtall Corporation, New Providence, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 22/07 (2006.01);
U.S. Cl.
CPC ...
Abstract
Chromate free treatments and compositions for applying a conversion or passivation coating to metal surfaces. Preferred compositions comprise a film forming latex polymer, fluoacid, phosphoric acid, and a polyoxyethylene/oxypropylene block copolymer. The requisite metal surfaces are contacted by the compositions and dried. Rinsing is optional.