Patents by Inventor Frederic James Schweder

Frederic James Schweder 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).

  • Lathe cut dental alloy powder
    Patent number: 4080199
    Abstract: A new dental alloy powder comprising lathe cut, homogeneous particles having a composition of 35 to 50 percent silver, 20 to 30 percent copper and 25 to 35 percent tin.
    Type: Grant
    Filed: May 27, 1976
    Date of Patent: March 21, 1978
    Assignee: Johnson & Johnson
    Inventors: Pei Sung, Frederic James Schweder
  • Indium containing dental alloy powder
    Patent number: 4030918
    Abstract: A new dental alloy powder comprising homogeneous particles having a composition of 35 to 50 percent silver, 20 to 30 percent copper, 25 to 35 percent tin and 2 to 8 percent indium.
    Type: Grant
    Filed: May 27, 1976
    Date of Patent: June 21, 1977
    Assignee: Johnson & Johnson
    Inventors: Pei Sung, Frederic James Schweder