Patents by Inventor Betzalel Ambar

Betzalel Ambar 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).

  • Invisible setting for round diamond stone
    Patent number: 5437167
    Abstract: A method and apparatus for invisibly setting round precious stones, particularly diamonds, is disclosed. The stones are provided with grooves cut in a belt portion, which is a faceted portion located between the girdle and the pavilion. The setting is a cylindrical barrel which is provided with wedge-shaped tongues projecting inwardly from the wall of the barrel. The outside of the barrel is hammered such that under the hammering force the elasticity of the metal permits the advance of the tongues into the grooves. The barrel forms a secure setting for the stone. Each of the wedges which are opposite form an obtuse downward angle which prevents the loosening of the stones, in the upward direction, such that the stone does not become free from the setting.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: August 1, 1995
    Inventor: Betzalel Ambar
  • Pendant
    Patent number: D339311
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: September 14, 1993
    Inventor: Betzalel Ambar
  • Finger ring
    Patent number: D342039
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: December 7, 1993
    Inventor: Betzalel Ambar
  • Jewelry ring
    Patent number: D349072
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: July 26, 1994
    Inventor: Betzalel Ambar
  • Finger ring
    Patent number: D373969
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: September 24, 1996
    Assignee: Ambar Diamonds Inc.
    Inventor: Betzalel Ambar
  • Finger ring
    Patent number: D374411
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: October 8, 1996
    Assignee: Ambar Diamonds Inc.
    Inventor: Betzalel Ambar
  • Finger ring
    Patent number: D383997
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: September 23, 1997
    Assignee: Ambar Diamonds, Inc.
    Inventor: Betzalel Ambar
  • Gemstone
    Patent number: D395844
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: July 7, 1998
    Inventor: Betzalel Ambar
  • Gemstone
    Patent number: D397954
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: September 8, 1998
    Inventor: Betzalel Ambar
  • Two stone jewelry setting
    Patent number: D400121
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: October 27, 1998
    Assignee: Ambar Diamonds Inc.
    Inventor: Betzalel Ambar
  • Gemstone
    Patent number: D400470
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: November 3, 1998
    Assignee: Ambar Diamonds Inc.
    Inventor: Betzalel Ambar