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. 15, 2015
Filed:
Dec. 01, 2011
Applicants:
Zhou Yong, Spring, TX (US);
Weiqi Yin, Houston, TX (US);
Bradley J. Head, Oklahoma City, OK (US);
Inventors:
Assignee:
Smith International, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/16 (2006.01); E21B 10/58 (2006.01);
U.S. Cl.
CPC ...
E21B 10/58 (2013.01); E21B 10/16 (2013.01);
Abstract
A drill bit configured for boring holes or wells into the earth, the drill bit having a face and a plurality of zones, the drill bit having geometrically sharp inserts located in an inner zone and non-geometrically sharp inserts located in an outer zone.