Patents by Inventor Karl-Heinz Hildenbrand

Karl-Heinz Hildenbrand 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).

  • Transparent flow through membrane for dry reagent analytical devices
    Patent number: 6187268
    Abstract: Disclosed is a diagnostic device for the colorimetric detection of an analyte in a test fluid. The device is a dry reagent layer which is overcoated with a transparent, fluid permeable membrane. The membrane is made up of a combination of a water dispersible and a water soluble polymer. The membrane may contain a surfactant and a thickener.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: February 13, 2001
    Assignee: Bayer Corporation
    Inventors: James P. Albarella, Karl-Heinz Hildenbrand, Spencer H. Lin, Michael J. Pugia, LLoyd S. Schulman
  • Electrochemical biosensor
    Patent number: 5759364
    Abstract: Disclosed is an electrochemical sensor which is made up of an insulating base plate bearing an electrode on its surface which reacts with an analyte to produce mobile electrons. The base plate is mated with a lid of a deformable material which has a concave area surrounded by a flat surface so that when mated to the base plate there is formed a capillary space into which a fluid test sample can be drawn. The side of the lid facing the base is coated with a polymeric material which serves to bond the lid to the base plate and to increase the hydrophilic nature of the capillary space.
    Type: Grant
    Filed: May 2, 1997
    Date of Patent: June 2, 1998
    Assignee: Bayer Corporation
    Inventors: Steven C. Charlton, Yingping Deng, Karl-Heinz Hildenbrand, Larry D. Johnson, James J. Venosky