Patents by Inventor Grant Charles Summerton

Grant Charles Summerton has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High crystalline quality synthetic diamond
    Patent number: 9133566
    Abstract: The invention relates to a single crystal CVD diamond material, wherein the extended defect density as characterized by X-ray topography is less than 400/cm2 over an area of greater than 0.014 cm2. The invention further relates to a method for producing a CVD single crystal diamond material according to any preceding claim comprising the step of selecting a substrate on which to grow the CVD single crystal diamond, wherein the substrate has at least one of a density of extended defects as characterized by X-ray topography of less than 400/cm2 over an area greater than 0.014 cm2; an optical isotropy of less than 1×10-5 over a volume greater than 0.1 mm3; and a FWHM X-ray rocking curve width for the (004) reflection of less than 20 arc seconds.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: September 15, 2015
    Assignee: ELEMENT SIX TECHNOLOGIES LIMITED
    Inventors: Daniel James Twitchen, Grant Charles Summerton, Ian Friel, John Olaf Hansen, Keith Barry Guy, Michael Peter Gaukroger, Philip Maurice Martineau, Robert Charles Burns, Simon Craig Lawson, Timothy Patrick Gerard Addison
  • Method of improving the crystalline perfection of diamond crystals
    Patent number: 9061263
    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.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: June 23, 2015
    Assignee: ELEMENT SIX TECHNOLOGIES LIMITED
    Inventors: Grant Charles Summerton, John Olaf Hansen, Robert Charles Burns, Timothy Patrick Gerard Addison, Simon Craig Lawson, Keith Barry Guy, Michael Peter Gaukroger
  • METHOD OF IMPROVING THE CRYSTALLINE PERFECTION OF DIAMOND CRYSTALS
    Publication number: 20090258229
    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.
    Type: Application
    Filed: December 9, 2005
    Publication date: October 15, 2009
    Inventors: Grant Charles Summerton, John Olaf Hansen, Robert Charles Burns, Timothy Patrick Gerard Addison, Simon Craig Lawson, Keith Barry Guy, Michael Peter Gaukroger
  • HIGH CRYSTALLINE QUALITY SYNTHETIC DIAMOND
    Publication number: 20090127506
    Abstract: The invention relates to a single crystal CVD diamond material, wherein the extended defect density as characterised by X-ray topography is less than 400/cm2 over an area of greater than 0.014 cm2. The invention further relates to a method for producing a CVD single crystal diamond material according to any preceding claim comprising the step of selecting a substrate on which to grow the CVD single crystal diamond, wherein the substrate has at least one of a density of extended defects as characterised by X-ray topography of less than 400/cm2 over an area greater than 0.014 cm2; an optical isotropy of less than 1×10-5 over a volume greater than 0.1 mm3; and a FWHM X-ray rocking curve width for the (004) reflection of less than 20 arc seconds.
    Type: Application
    Filed: December 8, 2006
    Publication date: May 21, 2009
    Inventors: Daniel James Twitchen, Grant Charles Summerton, Ian Friel, John Olaf Hansen, Keith Barry Guy, Michael Peter Gaukroger, Philip Maurice Martineau, Robert Charles Burns, Simon Craig Lawson, Timothy Patrick Gerard Addison