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. 25, 1991
Filed:
Feb. 22, 1989
Applicant:
Inventor:
Toan M Ngo, Eureka, MO (US);
Assignee:
Monsanto Chemical Company, St. Louis, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
106 1412 ; 148247 ; 148254 ;
Abstract
Compositions and process for activating metal surfaces prior to coating with zinc phosphate are disclosed. A Jernstedt salt concentrate is provided which can be employed to prepare Jernstedt salt baths of the type desired by combining the concentrate with additional alkali metal phosphate. Improved activation of metal surfaces are achieved by incorporating a chloride ion producing compound in the activating bath.