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:
Oct. 22, 2013
Filed:
Nov. 16, 2007
Applicants:
Philippe Maurin-perrier, Saint-Marcellin-En-Forez, FR;
Herve Chavanne, Noalhat, FR;
Smail Aaziz, Saint-Etienne, FR;
Inventors:
Philippe Maurin-Perrier, Saint-Marcellin-En-Forez, FR;
Herve Chavanne, Noalhat, FR;
Smail Aaziz, Saint-Etienne, FR;
Assignee:
H.E.F., Andrezieux Boutheon, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D 9/10 (2006.01); C25D 9/06 (2006.01); C25D 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a superficial treatment method by electrolysis of ferrous surfaces to enhance friction or tread and seizing resistance features, wherein the surfaces provide the electrolysis anode, the electrolysis bath includes a sulphur species, primarily contains water and also contains a chloride salt and a nitrogen species in quantities which facilitates the sulphuration reaction of the surfaces.