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:
Nov. 29, 2011
Filed:
May. 08, 2007
Anthony Griffo, The Woodlands, TX (US);
Madapusi K. Keshavan, The Woodlands, TX (US);
Youhe Zhang, Tomabll, TX (US);
Yuelin Shen, Houston, TX (US);
Michael Janssen, Spring, TX (US);
Anthony Griffo, The Woodlands, TX (US);
Madapusi K. Keshavan, The Woodlands, TX (US);
Youhe Zhang, Tomabll, TX (US);
Yuelin Shen, Houston, TX (US);
Michael Janssen, Spring, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
Thermally stable ultra-hard compact constructions comprise a polycrystalline diamond body substantially free of a catalyst material, and a substrate that is joined thereto. The substrate can be ceramic, metallic, cermet and combinations thereof, and can be joined to the body by a braze material or other material that forms an attachment bond at high pressure/high temperature conditions. The body and substrate are specially formed having complementary interfacing surface features to facilitate providing an improved degree of attachment therebetween. The complementary surface features can in the form of openings and projections, e.g., one of the body or substrate can comprise one or more openings, and the other of the body or substrate can comprise one or more projections, disposed within or extending from respective interfacing surfaces. The complementary surface features operate to resist unwanted delamination between the body and substrate, thereby extending effective service life of the construction.