Patents by Inventor Nonton Hill-Male

Nonton Hill-Male 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).

  • Non-reusable syringe
    Patent number: 5026346
    Abstract: A syringe comprising a barrel with means for positioning a needle at a forward end thereof, a plunger displaceable within the barrel, sealing means to maintain the integrity of a dispensing chamber forwardly of the barrel, wherein the plunger has associated disabling means to render the sealing means ineffective after a first use of the syringe.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: June 25, 1991
    Assignee: Dowty Seals Limited
    Inventors: John R. Spanner, Nonton Hill-Male, Harinder S. Soomal