Patents by Inventor Brian Steven Gavin

Brian Steven Gavin 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).

  • Emerald-cut diamond method
    Patent number: 11478052
    Abstract: Emerald-cut diamond with length/width of 1.35 to 1.40; table of 55 to 60 percent; corner ratio of 13.5 to 14.5 percent; girdle thickness up to 3 percent; crown main angle of 28 to 45 degrees; first crown break angle of 2 to 6 degrees; second crown break angle of 2 to 6 degrees; pavilion main angle of 43 to 48 degrees; first pavilion break angle of 2 to 5 degrees; and second pavilion break angle of 2 to 5 degrees. Diamonds cut in accordance with these parameters may have light performance 0-grade domains on a grade map with wide crown and pavilion mains ranges. A method cuts the diamond according to the parameters, and may include selecting crown and pavilion main angles from the map, and cutting the diamond sufficiently close to the selected cutting parameters to obtain the light performance grade of 0.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: October 25, 2022
    Assignee: LEBIPIME IP LLC
    Inventor: Brian Steven Gavin
  • Emerald-cut diamond
    Patent number: 10448713
    Abstract: Emerald-cut diamond with length/width of 1.35 to 1.40; table of 55 to 60 percent; corner ratio of 13.5 to 14.5 percent; girdle thickness up to 3 percent; crown main angle of 28 to 45 degrees; first crown break angle of 2 to 6 degrees; second crown break angle of 2 to 6 degrees; pavilion main angle of 43 to 48 degrees; first pavilion break angle of 2 to 5 degrees; and second pavilion break angle of 2 to 5 degrees. Diamonds cut in accordance with these parameters may have light performance 0-grade domains on a grade map with wide crown and pavilion mains ranges. A method cuts the diamond according to the parameters, and may include selecting crown and pavilion main angles from the map, and cutting the diamond sufficiently close to the selected cutting parameters to obtain the light performance grade of 0.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: October 22, 2019
    Inventor: Brian Steven Gavin
  • Maximum light performance gemstone cutting technique
    Patent number: 10405618
    Abstract: A precision hearts and arrows gemstone cut having an AGS light performance grade of ideal 0 and having an ASET image free or essentially free of green hemisphere light in the peripheral regions of the table facet; and methods for shaping the gemstone to eliminate the green table effect. The green table effect is avoided by using specific ranges of crown mains angles, pavilion mains angles, lower halves lengths, and/or lower halves angles, in accordance with specific values and/or mathematical formulae.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: September 10, 2019
    Inventor: Brian Steven Gavin
  • Cushion cut diamond with hearts and arrows pattern
    Patent number: D639202
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: June 7, 2011
    Inventor: Brian Steven Gavin