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:
Jun. 07, 1988
Filed:
Aug. 08, 1986
Applicant:
Inventors:
Assignee:
Nihon Parkerizing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
148-616 ;
Abstract
A chromate composition and process provide improved corrosion resistance and paint adhesion for zinc surfaces. The aqueous acidic composition contains hexavalent and trivalent chromium phosphate and fluorozirconate at prescribed concentrations. The composition is applied and dried without rinsing to yield a chromium coating weight of 10-200 mg/m.sup.2.