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:
Jun. 23, 2015
Filed:
Dec. 09, 2005
Grant Charles Summerton, Norwood, ZA;
John Olaf Hansen, Rouxville, ZA;
Robert Charles Burns, Northcliff, ZA;
Timothy Patrick Gerard Addison, Midrand, ZA;
Simon Craig Lawson, Berkshire, GB;
Keith Barry Guy, Buckinghamshire, GB;
Michael Peter Gaukroger, Hampshire, GB;
Grant Charles Summerton, Norwood, ZA;
John Olaf Hansen, Rouxville, ZA;
Robert Charles Burns, Northcliff, ZA;
Timothy Patrick Gerard Addison, Midrand, ZA;
Simon Craig Lawson, Berkshire, GB;
Keith Barry Guy, Buckinghamshire, GB;
Michael Peter Gaukroger, Hampshire, GB;
ELEMENT SIX TECHNOLOGIES LIMITED, Harwell, Oxford, GB;
Abstract
This invention relates to a method of improving the crystalline perfection of IIa diamond crystals by heating the grown diamond crystals at an elevated temperature and an elevated pressure. The invention extends to grown diamond material having a low extended defect density with low nitrogen concentration.