Patents by Inventor Sidney I. Berger

Sidney I. Berger 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).

  • Disposable mixing syringe
    Patent number: 4159570
    Abstract: A disposable mixing syringe especially adapted for dental use is described. It comprises a barrel of uniform inside diameter divided by a fixed diaphragm into upper and lower chambers for receiving respectively first and second components of a mixture to be formed and terminating in a nozzle having a small orifice. A removable closure seals the opposite barrel end. Inserting a mixing tool through the diaphragm allows rapid mixing of the constituents, after which a suitable plunger is provided to expel the contents through the orifice.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: July 3, 1979
    Assignee: Dentipressions Incorporated
    Inventors: Morris J. Baskas, Sidney I. Berger