Patents by Inventor Jack Markowitz

Jack Markowitz 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 blood collection and filtering device
    Patent number: 3939822
    Abstract: A blood collection and handling device having an elongate body comprising first and second evacuated test tubes connected by a coaxially disposed rubber conduit having a frangible valve in the bore, a compressible middle portion at the valve, and a filter in the bore; the first test tube connects to the rubber conduit proximate the valve and has an elastomeric end adapted for drawing blood into it by means of a double-ended needle, and the second test tube connects to the rubber conduit proximate the filter and has a rounded end.
    Type: Grant
    Filed: August 14, 1974
    Date of Patent: February 24, 1976
    Inventor: Jack Markowitz