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:
Oct. 16, 2018
Filed:
Sep. 02, 2014
Applicant:
Smith International, Inc., Houston, TX (US);
Inventors:
Yi Fang, Orem, UT (US);
J. Daniel Belnap, Lindon, UT (US);
Scott L. Horman, Provo, UT (US);
Ryan Davis, Pleasant Grove, UT (US);
Haibo Zhang, Lindon, UT (US);
Assignee:
SMITH INTERNATIONAL, INC., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/56 (2006.01); E21B 10/46 (2006.01); B24D 99/00 (2010.01); B24D 3/10 (2006.01); B24D 18/00 (2006.01);
U.S. Cl.
CPC ...
E21B 10/56 (2013.01); B24D 3/10 (2013.01); B24D 18/0009 (2013.01); B24D 99/005 (2013.01); E21B 10/46 (2013.01);
Abstract
Cutting elements include polycrystalline diamond which may be attached to a substrate. The polycrystalline diamond may have a ratio of cubic to hexagonal cobalt crystalline structures of greater than about 1.2. The polycrystalline diamond may have a high level surface compressive stress of greater than about 500 MPa.