Patents by Inventor Hans-Hagen von Dohren

Hans-Hagen von Dohren 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).

  • Test device and a method for the detection of a component of a liquid sample
    Patent number: 4824639
    Abstract: In a test strip for the detection of a component in a liquid sample, the strip comprising a support layer, a microporous polymer layer and a reagent for the detection of the component to be determined, the improvement wherein the microporous polymer layer is a membrane which has an asymmetric pore structure with the narrower pores being on the side to which the sample is applied, and the support layer is macroscopically smooth. The porous membrane is produced by coagulation from solution.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: April 25, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karlheinz Hildenbrand, Hans-Hagen von Dohren, Hermann Perrey, Georg Frank, Rolf Dhein
  • Transparent test strip system
    Patent number: 4824640
    Abstract: A transparent reagent carrier layers in analytical agents for dry chemical detection of constituents of aqueous sample solutions, the reagent carrier layer consisting of a water-soluble or water-swellable component and a film-forming component.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: April 25, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karlheinz Hildenbrand, Hans-Hagen Von Dohren, Hermann Perrey, Klaus Wehling