Patents Assigned to Tec Ventures, INC
  • Method for molding dental restorations and related apparatus
    Patent number: 6346306
    Abstract: The present is invention is concerned with a heat deformable crucible used for the preparation of glass-ceramic materials and the resulting dental restorations. The crucible has a base and a side portion and is formed from the sintering of silica with a particulate mixture of borosilicate glass having a composition in weight percent of 78% SiO2, 15% B2O3, 2.5% Al2O3 and 4.5% Na2O3.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: February 12, 2002
    Assignee: Tec Ventures, INC
    Inventor: Richard W. Petticrew