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:
Feb. 17, 2015
Filed:
Dec. 04, 2012
Applicant:
Smith International, Inc., Houston, TX (US);
Inventors:
Zhigang Fang, The Woodlands, TX (US);
Anthony Griffo, The Woodlands, TX (US);
Gregory T. Lockwood, Houston, TX (US);
Dah-Ben Liang, The Woodlands, TX (US);
Assignee:
Smith International, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/52 (2006.01); E21B 10/46 (2006.01); B22F 3/15 (2006.01); C22C 29/00 (2006.01); C22C 29/06 (2006.01);
U.S. Cl.
CPC ...
E21B 10/46 (2013.01); B22F 3/156 (2013.01); C22C 29/00 (2013.01); C22C 29/06 (2013.01); E21B 10/52 (2013.01); B22F 2998/00 (2013.01);
Abstract
A cutting element for engaging earthern formations having a wear surface formed from a low coefficient of thermal expansion (CTE) composition including a polycrystalline diamond or polycrystalline cubic boron nitride hard phase material and a ductile phase low CTE material formed from an alloy made of Co, Ni, Fe, C, and Mn. The hard phase material is bonded to one another by the ductile phase material to form the low CTE composition.