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:
Feb. 24, 2009
Filed:
May. 26, 2005
Madapusi K. Keshavan, The Woodlands, TX (US);
Youhe Zhang, Tomball, TX (US);
Yuelin Shen, Houston, TX (US);
Anthony Griffo, The Woodlands, TX (US);
Michael Janssen, Spring, TX (US);
Madapusi K. Keshavan, The Woodlands, TX (US);
Youhe Zhang, Tomball, TX (US);
Yuelin Shen, Houston, TX (US);
Anthony Griffo, The Woodlands, TX (US);
Michael Janssen, Spring, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
PCD materials comprise a diamond body having bonded diamond crystals and interstitial regions disposed among the crystals. The diamond body is formed from diamond grains and a catalyst material at high pressure/high temperature conditions. The diamond grains have an average particle size of about 0.03 mm or greater. At least a portion of the diamond body has a high diamond volume content of greater than about 93 percent by volume. The entire diamond body can comprise high volume content diamond or a region of the diamond body can comprise the high volume content diamond. The diamond body includes a working surface, a first region substantially free of the catalyst material, and a second region that includes the catalyst material. At least a portion of the first region extends from the working surface to depth of from about 0.01 to about 0.1 mm.