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:
Aug. 11, 2015
Filed:
Jun. 14, 2012
Applicants:
Stefan Backlund, Osthammar, SE;
Ulf Jutterstrom, Stockholm, SE;
Inventors:
Stefan Backlund, Osthammar, SE;
Ulf Jutterstrom, Stockholm, SE;
Assignee:
SANDVIK INTELLECTUAL PROPERTY AB, Sandviken, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B07C 5/02 (2006.01); C22B 7/00 (2006.01); B22F 3/24 (2006.01);
U.S. Cl.
CPC ...
B07C 5/02 (2013.01); B22F 3/24 (2013.01); C22B 7/001 (2013.01);
Abstract
A method for sorting hard metal including the steps of subjecting one or more bodies of hard metal to a heat treatment at a temperature of 500° C. or higher in an atmosphere including at least one reactive gas component prone to form a reaction product with an element that may or may not be present in the one or more bodies. A sorting operation of the one or more bodies is performed based on a presence or absence of the reaction product in a surface portion of the heat treated one or more bodies.