Patents by Inventor Ian B. Douglas

Ian B. Douglas 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).

  • GEMSTONE
    Publication number: 20200214406
    Abstract: The present invention provides a gemstone comprising a girdle dividing the gemstone into a pavilion and a crown having a table surface; a tier of facets cut into the pavilion at a position immediately below the girdle; and a continuous groove. The groove facilitates mounting to a collet having a mounting rim. The continuous groove is located in the tier of the facets cut into the pavilion. The placement of the tier of facets and continuous groove does not obstruct light return.
    Type: Application
    Filed: March 18, 2020
    Publication date: July 9, 2020
    Inventors: Ian B. Douglas, Michiel J. Botha
  • GEMSTONE
    Publication number: 20180042344
    Abstract: The present invention provides a gemstone comprising a girdle dividing the gemstone into a pavilion and a crown having a table surface; a tier of facets cut into the pavilion at a position immediately below the girdle; and a continuous groove. The groove facilitates mounting to a collet having a mounting rim. The continuous groove is located in the tier of the facets cut into the pavilion. The placement of the tier of facets and continuous groove does not obstruct light return.
    Type: Application
    Filed: April 3, 2017
    Publication date: February 15, 2018
    Inventors: Ian B. Douglas, Michiel J. Botha
  • Gemstone
    Patent number: D831525
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: October 23, 2018
    Assignee: IDD LIMITED
    Inventors: Ian B. Douglas, Michiel J. Botha
  • Ring
    Patent number: D1035486
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: July 16, 2024
    Assignee: The Village Goldsmith Limited
    Inventor: Ian B. Douglas