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. 29, 2014
Filed:
Dec. 18, 2009
Applicants:
Antionette Can, Springs, ZA;
Geoffrey John Davies, Springs, ZA;
Johannes Lodewikus Myburgh, Springs, ZA;
Inventors:
Antionette Can, Springs, ZA;
Geoffrey John Davies, Springs, ZA;
Johannes Lodewikus Myburgh, Springs, ZA;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/46 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides for an ultra hard or hard composite material comprising a primary ultra hard or hard particulate material and at least one secondary ultra hard or hard particulate material dispersed in a matrix material. The primary ultra hard or hard particulate material has a thermal expansion coefficient lower than that of the matrix material and the at least one secondary ultra hard or hard particulate material has a thermal expansion coefficient greater than that of the matrix material.