Patents by Inventor Hans D. Sieghart

Hans D. Sieghart 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).

  • Dispenser for paste-like products with a manually actuatable piston
    Patent number: 4301948
    Abstract: This invention relates to a dispenser for paste-like products of the type having a container containing a product and closed at one end by a slidable piston in sealing engagement with the inner wall surface thereof, the other end being provided with a head member carrying on applicator and forming a pump chamber the volume of which is variable by the exertion of exterior pressure, the pump chamber being closed towards said container by a first check valve adapted to open only towards the pump chamber, and towards the outlet of the applicator by a second check valve adapted to open only towards said outlet.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: November 24, 1981
    Assignee: Joachim Czech
    Inventors: Joachim Czech, Hans D. Sieghart
  • Dispenser for paste-like products with a manually actuatable piston
    Patent number: RE31408
    Abstract: This invention relates to a dispenser for paste-like products of the type having a container containing a product and closed at one end by a slidable piston in sealing engagement with the inner wall surface thereof, the other end being provided with a head member carrying on applicator and forming a pump chamber the volume of which is variable by the exertion of exterior pressure, the pump chamber being closed towards said container by a first check valve adapted to open only towards the pump chamber, and towards the outlet of the applicator by a second check valve adapted to open only towards said outlet.
    Type: Grant
    Filed: February 1, 1982
    Date of Patent: October 11, 1983
    Assignee: Joachim Czech
    Inventors: Joachim Czech, Hans D. Sieghart