Patents by Inventor Knud Robert Petersen

Knud Robert Petersen 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).

  • Patent number: 6183445
    Abstract: The present invention is directed to a syringe with a retractable needle guard. The syringe has two coaxial tubular bodies, an inner and an outer body, which are adapted to telescope in relationship to each other. The outer tubular body is adapted to at least partially receive the body of the container from which fluid is to be drawn and the inner tubular body is adapted to be displaced from a retracted position to an advanced position. In the retracted position the needle is exposed, while in the advanced position the needle is surrounded by the inner tubular body. The syringe with a retractable needle guard may also be adapted to connect the outer tubular body with the needle without connecting it to the container from which fluid is to be drawn.
    Type: Grant
    Filed: September 17, 1997
    Date of Patent: February 6, 2001
    Assignee: Radiometer Medical A/S
    Inventors: Per William Lund, Knud Robert Petersen