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:
Nov. 26, 2002
Filed:
Sep. 28, 2001
Hervé Derule, Metz, FR;
Hubert Jacobs, Thionville, FR;
Amadou Dicko, Metz Vallieres, FR;
Peggy Guinet, Yutz, FR;
Unisor, Puteaux, FR;
Abstract
An emulsion used to lubricate the surface of a steel sheet, comprising an additive corresponding to one of the following formulae: (R —O—) —PSS—(CH ) —COO—(CH ) —CH , (R —O—) —PSS—CH2-&phgr;-O—H, (R —O—) —PSS—CH -&phgr;-O—(CH ) , —COO—(CH ) , —CH , where PSS designates a dithiophosphate function. The naked sheets of steel that are treated with said emulsion have very good tribological properties even when the density of the emulsion thus applied is less than or equal to 1 g/m when dry. The invention enables dry-looking oiled sheets to be obtained, whereby no re-oiling is required before forming even by die stamping.