Patents by Inventor Barbel Dorn

Barbel Dorn 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).

  • THICK SINGLE CRYSTAL DIAMOND LAYER METHOD FOR MAKING IT AND GEMSTONES PRODUCED FROM THE LAYER
    Publication number: 20080044339
    Abstract: A layer of single crystal CVD diamond of high quality having a thickness greater than 2 mm. Also provided is a method of producing such a CVD diamond layer.
    Type: Application
    Filed: March 5, 2007
    Publication date: February 21, 2008
    Inventors: Geoffrey Scarsbrook, Philip Martineau, Barbel Dorn, Michael Cooper, John Collins, Andrew Whitehead, Daniel Twitchen, Ricardo Sussman
  • COLOURED DIAMOND
    Publication number: 20070212543
    Abstract: A diamond layer of single crystal CVD diamond which is coloured, preferably which has a fancy colour, and which has a thickness of greater than 1 mm.
    Type: Application
    Filed: March 8, 2007
    Publication date: September 13, 2007
    Inventors: Daniel Twitchen, Philip Martineau, Geoffrey Scarsbrook, Barbel Dorn, Michael Cooper
  • Thick single crystal diamond layer method for making it and gemstones produced from the layer
    Publication number: 20070148079
    Abstract: A layer of single crystal CVD diamond of high quality having a thickness greater than 2 mm. Also provided is a method of producing such a CVD diamond layer.
    Type: Application
    Filed: July 14, 2006
    Publication date: June 28, 2007
    Inventors: Geoffrey Scarsbrook, Philip Martineau, Barbel Dorn, Michael Cooper, John Collins, Andrew Whitehead, Daniel Twitchen, Ricardo Sussmann
  • BORON DOPED DIAMOND
    Publication number: 20070092647
    Abstract: A layer of single crystal boron doped diamond produced by CVD and having a total boron concentration which is uniform. The layer is formed from a single growth sector, or has a thickness exceeding 100 ?m, or has a volume exceeding 1 mm3, or a combination of such characteristics.
    Type: Application
    Filed: December 1, 2006
    Publication date: April 26, 2007
    Inventors: Geoffrey Scarsbrook, Philip Martineau, Daniel Twitchen, Andrew Whitehead, Michael Cooper, Barbel Dorn