Patents by Inventor Olle Ljunquist

Olle Ljunquist 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).

  • Injection cartridge
    Patent number: 5501673
    Abstract: An injection cartridge of the dual-chamber type has a bypass connection between its two chambers which is arranged such that the interior wall of the cartridge is modified in a determined area in such a way that the movable wall between the two chambers does not seal completely against the interior wall in said area.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: March 26, 1996
    Assignee: Pharmacia AB
    Inventors: Birger Hjertman, Gustav Levander, Olle Ljunquist