Patents by Inventor Klaus Schönwetter

Klaus Schönwetter 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: 6419656
    Abstract: A medical syringe has a tubular body extending along an axis and having a front end and a rear end, a plunger axially slidable in the body and carrying a stem projecting axially rearward out of the body from the plunger, and a free piston slidable in the body forward of the plunger and subdividing the body forward of the plunger into a front compartment at the front body end and a rear compartment between the plunger and the piston. The body is formed with a bypass passage forward of the piston in a starting position so the front compartment can hold a soluble medicament and the rear compartment can hold its solvent. Structure at the rear body end forms a radially inwardly open angularly limited cutout and at least two axially spaced, angularly offset, and radially outwardly projecting stop bumps on the stem are axially displaceable through the cutout in respective angularly offset positions of the stem.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: July 16, 2002
    Assignee: Arzneimittel GmbH Apotheker Vetter & Ravensburg
    Inventors: Udo J. Vetter, Klaus Schönwetter