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:
May. 30, 2017
Filed:
Jun. 08, 2012
Applicant:
Jiinjen Albert Sue, Houston, TX (US);
Inventor:
Jiinjen Albert Sue, Houston, TX (US);
Assignee:
NATIONAL OILWELL VARCO, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/567 (2006.01); B24D 18/00 (2006.01); C22C 26/00 (2006.01); B22F 5/00 (2006.01);
U.S. Cl.
CPC ...
B24D 18/0009 (2013.01); C22C 26/00 (2013.01); E21B 10/567 (2013.01); E21B 10/5676 (2013.01); B22F 2005/001 (2013.01); B22F 2998/00 (2013.01);
Abstract
A cutter element for a drill bit, comprising: a substrate having a longitudinal axis; a first layer of polycrystalline diamond coupled to the substrate; and a second layer of polycrystalline diamond coupled to the first layer at a first coherent boundary; where the first layer is axially positioned between the substrate and the second layer.