Patents by Inventor Michael Hirsiger

Michael Hirsiger 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).

  • Multi-component piston stopper
    Publication number: 20030153876
    Abstract: A piston stopper for a medicine injector, wherein the stopper has a stopper body with a mesh section and at least one sealing element positioned at least partly around the circumference of the stopper body, wherein at least one of the sealing element and mesh section is connected to the stopper body in a material bond. A method for manufacturing such a piston stopper is encompassed.
    Type: Application
    Filed: August 14, 2002
    Publication date: August 14, 2003
    Inventors: Fritz Kirchhofer, Michael Hirsiger, Frank Schiffmann, Hanspeter Stoller