Patents by Inventor Karl Heissler

Karl Heissler 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).

  • Apparatus and method for the performance of capillary viscosimetric measurements on non-homogeneous liquids
    Patent number: 3990295
    Abstract: A device for making accurate capillary-viscosimetric measurements on non-homogeneous liquids of all types, and especially on biological liquids, such as human sputum samples; the device consists essentially of a cylinder comprising a plunger, a capillary tube, a pressure recorder, means for exerting a constant pressure upon said plunger, and a T-shaped adapter which provides communicating channels between the cylinder, the capillary tube and the pressure recorder.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: November 9, 1976
    Assignee: Boehringer Ingelheim GmbH
    Inventors: Hans-Dietrich Renovanz, Karl Heissler, Eberhard Weller