Patents by Inventor Dirk Verbiest

Dirk Verbiest 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).

  • Silicon carbide gemstones
    Patent number: 5762896
    Abstract: Synthetic gemstones having extraordinary brilliance and hardness are formed from large single crystals of relatively low impurity, translucent silicon carbide of a single polytype that are grown in a furnace sublimation system. The crystals are cut into rough gemstones that are thereafter fashioned into finished gemstones. A wide range of colors and shades is available by selective doping of the crystal during growth. A colorless gemstone is produced by growing the crystal undoped in a system substantially free of unwanted impurity atoms.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: June 9, 1998
    Assignee: C3, Inc.
    Inventors: Charles Eric Hunter, Dirk Verbiest
  • Silicon carbide gemstones
    Patent number: 5723391
    Abstract: Synthetic gemstones having extraordinary brilliance and hardness are formed from large single crystals of relatively low impurity, translucent silicon carbide of a single polytype that are grown in a furnace sublimation system. The crystals are cut into rough gemstones that are thereafter fashioned into finished gemstones. A wide range of colors and shades is available by selective doping of the crystal during growth. A colorless gemstone is produced by growing the crystal undoped in a system substantially free of unwanted impurity atoms.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: March 3, 1998
    Assignee: C3, Inc.
    Inventors: Charles Eric Hunter, Dirk Verbiest
  • Octagonal-shaped diamond
    Patent number: D511993
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: November 29, 2005
    Inventor: Dirk Verbiest