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:
Jul. 20, 2010
Filed:
Sep. 16, 2008
John Daniel Belnap, Pleasant Grove, UT (US);
Anthony Griffo, The Woodlands, TX (US);
Ronald K. Eyre, Orem, UT (US);
Stewart N. Middlemiss, Salt Lake City, UT (US);
John Daniel Belnap, Pleasant Grove, UT (US);
Anthony Griffo, The Woodlands, TX (US);
Ronald K. Eyre, Orem, UT (US);
Stewart N. Middlemiss, Salt Lake City, UT (US);
Smith International, Inc., Houston, TX (US);
Abstract
Ultrahard composite constructions comprise a plurality of first phases dispersed within a matrix second phase, wherein each can comprise an ultrahard material including PCD, PcBN, and mixtures thereof. The constructions are formed from a plurality of granules that are combined and sintered at HP/HT conditions. The granules include a core surrounded by a shell and both are formed from an ultrahard material or precursor comprising an ultrahard constituent for forming the ultrahard material. When sintered, the cores form the plurality of first phases, and the shells form at least a portion of the second phase. The ultrahard material used to form the granule core may have an amount of ultrahard constituent different from that used to form the granule shell to provide desired different properties. The ultrahard constituent in the granule core and shell can have approximately the same particle size.