Patents by Inventor Per-Olof Silen

Per-Olof Silen 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).

  • Thermal vascular dilator
    Patent number: 4747409
    Abstract: A body-attached device for dilating blood vessels. An elongated, rigid channel-shaped member receives the under side of a body extremity such as the forearm. The inside of the member carries a sleeve which is adapted to be wrapped over the top side of the arm and retained in place by Velcro tabs. The sleeve contains electric resistance heating elements and is in several sections separately wrappable around the arm. The forward end of the elongated member has a handle bar to be gripped by the user's hand.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: May 31, 1988
    Assignee: Teknikhuset Swetron AB
    Inventor: Per-Olof Silen