Patents Assigned to M. Fabrikant & Sons, Ltd.
  • Corner cut precious square stones
    Patent number: 6065307
    Abstract: A combination precious or semi-precious stone setting is formed utilizing princess or square cut stones having their edges lopped off, with at least two of the stones joined edge to edge forming a space where the lopped off corners were located, further including a square cut stone placed in this space to form a novel and enhanced appearing jewelry setting.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: May 23, 2000
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joseph Freilich
  • Facet cut structure for gemstones to enhance brilliance
    Patent number: 6006548
    Abstract: A new structure for a colored gem, generally round or oval, in which a barrel cut is employed, but which has a center top edge and transverse boundaries which increases the thickness of the stone with additional facets provided to enhance reflection and overall brilliance.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: December 28, 1999
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joseph Freilich
  • Facet cut structure for colored stones to enhance brilliance
    Patent number: 5761929
    Abstract: A new structure for a colored gem, generally round or oval, in which a barrel cut is employed, but which has a center top edge and transverse boundaries which increases the thickness of the stone with additional facets provided to enhance reflection and overall brilliance.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: June 9, 1998
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joseph Freilich
  • Method and apparatus to set precious stones without hammering
    Patent number: 5758517
    Abstract: An jewelry article includes a metal portion and stones attached thereto. The metal portion has ornamental surfaces with a fragile structure, and the stones set fixedly directly to the ornamental surfaces without hammering or deforming of the ornamental surfaces.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: June 2, 1998
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joseph Freilich
  • Facing marquis halves to form a marquis stone
    Patent number: 5533364
    Abstract: A gem for a piece of jewelry is made from smaller gems set by prong settings to provide abutting facets of each in which the line of abutment is substantially invisible to the ordinary observer. The facing facets are angled with respect to an imaginary plane therebetween.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: July 9, 1996
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joseph Freilich
  • Gemstone
    Patent number: D439542
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: March 27, 2001
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventors: Douglas W. Turner, Robert F. Courtney
  • Diamond
    Patent number: D512936
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: December 20, 2005
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventors: Si Ying Sung, Kuo Jui Chao
  • Diamond
    Patent number: D514471
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: February 7, 2006
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventors: Si Ying Sung, Kuo Jui Chao
  • Diamond
    Patent number: D524682
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: July 11, 2006
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventors: Si Ying Sung, Kuo Jui Chao
  • Diamond
    Patent number: D524688
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: July 11, 2006
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventors: Si Ying Sung, Kuo Jui Chao
  • Diamond
    Patent number: D524689
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: July 11, 2006
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventors: Si Ying Sung, Kuo Jui Chao
  • Round multi-faceted diamond
    Patent number: D469033
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: January 21, 2003
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Benjamin Siebenberg
  • Modified round faceted diamond
    Patent number: D469034
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: January 21, 2003
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joe C. C. Yuan
  • Modified princess faceted diamond
    Patent number: D469035
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: January 21, 2003
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joe C. C. Yuan
  • Diamond
    Patent number: D479148
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: September 2, 2003
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Susan F. Fortgang
  • Gem cut
    Patent number: D419103
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: January 18, 2000
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joseph Freilich
  • Gem cut
    Patent number: D422238
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: April 4, 2000
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joseph Freilich
  • Gem cut
    Patent number: D434692
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: December 5, 2000
    Assignee: M. Fabrikant & Sons, Ltd.
    Inventor: Joseph Freilich