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:
Dec. 10, 2013
Filed:
Oct. 07, 2009
Christophe Colin, Evry, FR;
Elodie Sorlier, Paris, FR;
Alfazazi Dourfaye, Paris, FR;
Varel International, Ind., L.P., Carrollton, TX (US);
Abstract
A block of dense material is made up of hard particles, of the same or different nature, dispersed in a binder phase. The material has a solidus temperature Tabove which the binder phase is liquid. There is deposited on at least a portion of the surface of the block of dense material an active coating composed of a material capable of reacting chemically with the dense material when the assembly is heated to beyond a minimum reaction temperature T. The block coated with the active coating is subjected to a heat treatment comprising heating, then maintenance for a time tat a maintenance temperature Tgreater than or equal to the minimum reaction temperature T, followed by cooling to ambient temperature.