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:
May. 08, 1984
Filed:
Mar. 16, 1983
Applicant:
Inventors:
Assignee:
Chemische Werke Huels Aktiengesellschaft, Marl, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
148 / ;
Abstract
A process for phosphating metallic surfaces in nonaqueous phosphating baths comprising low-boiling halogenated hydrocarbons, aqueous phosphoric acid as the phosphating agent, alcohols as the solubilizer, and, optionally, further known components, e.g., stabilizers, inhibitors, or accelerators, comprising dipping the workpieces to be phosphated at least twice for at least 10 seconds into the boiling phosphating bath and, in the interval, leaving them for at least 20 seconds in the gaseous phase.