Patents Assigned to Rhea Industries
  • Synthetic fire opal
    Patent number: 7442660
    Abstract: A synthetic fire opal having similar physical and chemical properties as natural fire opal. The synthetic fire opal is colored, hard, and transparent. The synthetic fire opal comprises SiO2 and water.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: October 28, 2008
    Assignee: Rhea Industries
    Inventor: Rajneesh Bhandari