Patents Assigned to Simka Diamonds Corporation
  • Diamond cut
    Patent number: 6430963
    Abstract: A brilliant gemstone cut, having a crown, a girdle and a pavilion. The crown and the pavilion are both brilliant cut. The crown has a flat table shaped as an equilateral n-sided polygon, n corner facets and n upper girdle facets. The girdle is also shaped as an n-sided polygon. The pavilion has n rib lines, which converge at a culet, n lower girdle facets, n bezel star facets and double n number of corner facets. The rib lines subdivide the pavilion into n equivalent parts.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: August 13, 2002
    Assignee: Simka Diamonds Corporation
    Inventors: Isaac Friedman, Philip Katz
  • Diamond cut
    Patent number: D447440
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: September 4, 2001
    Assignee: Simka Diamonds Corporation
    Inventors: Isaac Friedman, Philip Katz