Patents by Inventor Helmut Rinkel

Helmut Rinkel 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).

  • Dispensing device for dispensing small quantities of fluid
    Patent number: 6024138
    Abstract: Dispensing device for dispensing small quantities of fluid comprising a compressible balloon with an end-to-end capillary inserted within the walls of the balloon in such a way that the one end of the capillary communicates with the interior of the balloon and the other end of the capillary communicates with the exterior space. The balloon has at least one opening through which the interior space of the balloon communicates with the exterior space. The at least one opening has a flow resistance that is designed so that a fluid contained in the capillary is expelled when the balloon is compressed. The present invention also comprises a system and method for the metered dispensing of fluids.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: February 15, 2000
    Assignee: Roche Diagnostics GmbH
    Inventors: Michael Fritz, Heinz Macho, Helmut Rinkel, Jurgen Schwab, Georg Arras, Klaus Oswald, Alfred Schaffner