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:
Jan. 12, 2016
Filed:
Feb. 18, 2010
Applicants:
Herve Chavanne, Noalhat, FR;
Philippe Maurin-perrier, Saint-Marcellin-en-Forez, FR;
Inventors:
Herve Chavanne, Noalhat, FR;
Philippe Maurin-Perrier, Saint-Marcellin-en-Forez, FR;
Assignee:
H.E.F., Andrezieux Boutheon, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 8/32 (2006.01); C23C 8/26 (2006.01); C21D 1/06 (2006.01); C21D 1/74 (2006.01); C21D 8/02 (2006.01); C21D 8/04 (2006.01); C21D 9/18 (2006.01); C23C 8/36 (2006.01); C23C 8/56 (2006.01); C23C 8/76 (2006.01); C23C 8/80 (2006.01);
U.S. Cl.
CPC ...
C23C 8/26 (2013.01); C21D 1/06 (2013.01); C21D 1/74 (2013.01); C21D 8/0257 (2013.01); C21D 8/0457 (2013.01); C21D 9/18 (2013.01); C23C 8/32 (2013.01); C23C 8/36 (2013.01); C23C 8/56 (2013.01); C23C 8/76 (2013.01); C23C 8/80 (2013.01);
Abstract
A method for processing parts for kitchen tools in order to protect the parts from scratches, includes sequentially: a nitridation step, optionally including a nitrocarburizing step, between 592 and 750° C. in order to promote the formation of a nitrogen austenite layer; and a processing step for promoting the conversion of at least a portion of the nitrogen austenite into a phase with reinforced hardness.