Patents Assigned to HMR Group Limited
  • Ceramic pigment
    Patent number: 4486236
    Abstract: A grey ceramic pigment or stain which consists of zircon including, as the colorant, molybdenum sulphide or a mixture of molybdenum sulphide and molybdenum selenide.
    Type: Grant
    Filed: March 2, 1984
    Date of Patent: December 4, 1984
    Assignee: HMR Group Limited
    Inventor: John K. Olby