Patents by Inventor Joseph J. Tuccillo

Joseph J. Tuccillo 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).

  • White gold alloy
    Patent number: 3981723
    Abstract: A white gold alloy consisting essentially of 50-54% gold, 27-31% palladium, 11-16% silver, about 0.05-0.25% of iridium or ruthenium, and 4.5-8% of indium and tin, provided there is at least 2% indium, no more than 4.5% tin, and further provided that if there is less than about 6% indium, the alloy must contain at least 0.25% tin. The alloy meets or at least narrowly approaches the ADA Spec. No. 5 for Type IV dental casting gold alloys, and is useful for dental appliances and for the fusing of porcelain thereto for dental restorations.
    Type: Grant
    Filed: June 26, 1974
    Date of Patent: September 21, 1976
    Assignee: Pennwalt Corporation
    Inventor: Joseph J. Tuccillo
  • Dental restoration combining dental porcelain and improved white gold alloy
    Patent number: 3961420
    Abstract: A white gold alloy consisting essentially of 50-54% gold, 27-31% palladium, 11-16% silver, about 0.05-0.25% of iridium or ruthenium, and 4.5-8% of indium and tin, provided there is at least 2% indium, no more than 4.5% tin, and further provided that if there is less than about 6% indium, the alloy must contain at least 0.25% tin. The alloy meets or at least narrowly approaches the ADA Spec. No. 5 for Type IV dental casting gold alloys, and is useful for dental appliances and for the fusing of porcelain thereto for dental restorations.
    Type: Grant
    Filed: June 26, 1974
    Date of Patent: June 8, 1976
    Assignee: Pennwalt Corporation
    Inventor: Joseph J. Tuccillo