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. 12, 2017
Filed:
Oct. 05, 2015
Cnpc Usa Corp., Houston, TX (US);
CNPC USA Corp., Houston, TX (US);
Abstract
The polycrystalline diamond compact cutter includes a diamond table and a carbide substrate. Different zones of the diamond table with relative thermal stability and toughness to each other are arranged for a particular cutting efficiency and working life. A thermally stable zone has a metal formation agent removed and forms a top outer ring. A base zone bonds to the carbide substrate on the bottom surface of the diamond table. An anchor zone sets between the thermally stable zone and the base zone, and an absorbing zone extends from the top surface to the base zone. The absorbing zone is circumscribed by the thermally stable zone and the anchor zone. The weight percentage metal content of the anchor zone is less than weight percentage metal content of the base zone. The weight percentage metal content of the base zone is less than weight percentage metal content of the absorbing zone.