Patents by Inventor Fritz F. Bonnichsen

Fritz F. Bonnichsen 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).

  • Dosage unit for dosing a number of measured quantities of a liquid, such as an insulin preparation, from a container, preferably a cartridge
    Patent number: 5017190
    Abstract: A dosage unit for dosing a number of measured quantities of a liquid, such as insulin, from a cartridge (2), said dosage unit comprising a cylindrical casing (1) for the cartridge (2), the distal end of the casing (1) being provided with means for fastening an injection needle (5) with two points protruding at opposite sides, one point (7) thereof being provided to be plunged into the cartridge (2). The other end of the casing comprises a piston rod (13) for exerting a force on a piston (8) inside the cartridge (2) and an adjustment means (20) provided with an inner thread (21), said adjustment means being in rotatable engagement with an outer thread (19) on the outside of the casing (1). The adjustment means (20) is adapted to limit the length of the stroke of the piston rod (13) after adjustment in accordance with a measuring scale (37, 38) stating the desired dosage quantity.
    Type: Grant
    Filed: October 5, 1989
    Date of Patent: May 21, 1991
    Assignee: D.C.P. AF 1988 A/S
    Inventors: Bernd Simon, Niels E. Holm, Fritz F. Bonnichsen