Patents by Inventor Ernst Kriegbaum

Ernst Kriegbaum 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).

  • Device for the repeated reproducible delivery of definite variable amounts by volume
    Patent number: 4120205
    Abstract: A combined micrometer screw and syringe assembly with variable predeterminable settings providing for the repeated, exactly reproducible delivery of predetermined variable volumetric amounts of liquid from the syringe but with permissive interim availability of the entire volume of the syringe for rinsing and cleaning thereof without altering any predetermined setting for the definite amount to be delivered therefrom.
    Type: Grant
    Filed: July 19, 1977
    Date of Patent: October 17, 1978
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Johannes Ripphahn, Ernst Kriegbaum