Patents Assigned to DF&G LTD
  • Effervescent cleaning composition comprising diamond powder having Dv50 of less than 40 micrometer
    Patent number: 9816060
    Abstract: A composition which effervesces when added to water, comprises diamond particles with a median equivalent volumetric diameter (Dv50) of less than 40 ?m. The compositions are useful as cleaning compositions, particularly for cleaning diamonds.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: November 14, 2017
    Assignee: DF&G LTD
    Inventor: Andrew Coxon