Patents by Inventor Frederick William Bernhardt

Frederick William Bernhardt 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).

  • Cartridges containing self-setting mixes
    Patent number: 4007831
    Abstract: A cartridge containing the inter-active components of a resin mix such as a polyester, epoxy or polyurethane, comprises tubular flexible containers, each containing an interactive component, the containers being sealed to prevent egress of their contents, the containers lying in side-by-side relation and preferably secured together by an adhesive such as a double sided adhesive tape.
    Type: Grant
    Filed: October 8, 1975
    Date of Patent: February 15, 1977
    Inventor: Frederick William Bernhardt
  • Method of making a cartridge
    Patent number: 3996722
    Abstract: A cartridge containing the inter-active components of a resin mix such as a polyester, epoxy or polyurethane, comprises tubular flexible containers, each containing an interactive component, the containers being sealed to prevent egress of their contents, the containers lying in side-by-side relation and preferably secured together by an adhesive such as a double sided adhesive tape.
    Type: Grant
    Filed: January 16, 1975
    Date of Patent: December 14, 1976
    Inventor: Frederick William Bernhardt