Patents by Inventor Mark H. Silverman

Mark H. Silverman 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).

  • Fluid flow valve
    Patent number: 4195632
    Abstract: An improvement in a fluid flow valve is disclosed. The valve comprises a combination of flexible tubing joined to a tubular member having a membrane closing off the passageway in the tubular member. A pointed spike having at least three radially projecting ribs extending longitudinally is located within the tubing adjacent the membrane and is movable by external manipulation of the tubing whereby the spike ruptures the membrane and creates a passageway permitting fluid to flow freely through the tubular member and adjoining tubing.
    Type: Grant
    Filed: May 3, 1978
    Date of Patent: April 1, 1980
    Assignee: Cutter Laboratories, Inc.
    Inventors: Wendell R. Parker, Mark H. Silverman, Willis L. Warner