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:
May. 03, 2005
Filed:
Feb. 14, 2001
Mark Philip D'evelyn, Niskayuna, NY (US);
Dong-sil Park, Schenectady, NY (US);
Thomas Richard Anthony, Schenectady, NY (US);
Clifford Lawrence Spiro, Willoughby Hills, OH (US);
Yue Meng, Columbus, OH (US);
Christopher Allen Long, Westerville, OH (US);
Mark Philip D'Evelyn, Niskayuna, NY (US);
Dong-Sil Park, Schenectady, NY (US);
Thomas Richard Anthony, Schenectady, NY (US);
Clifford Lawrence Spiro, Willoughby Hills, OH (US);
Yue Meng, Columbus, OH (US);
Christopher Allen Long, Westerville, OH (US);
Diamond Innovations, Inc., Worthington, OH (US);
Abstract
An element-doped diamond crystal is disclosed herein. The crystal includes at least one dopant element which has a greater concentration toward or near an outermost surface of the crystal than in the center of the crystal. The concentration of the dopant element is at a local minimum at least about 5 micrometers below the surface. The concentration-profile of the dopant element for these diamond crystals causes an expansion of the diamond lattice, thereby generating tangential compressive stresses at the surface of the diamond crystal. These stresses beneficially increase the compressive fracture strength of the diamond.