Patents by Inventor Heinz-Freidrich Trasch

Heinz-Freidrich Trasch 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).

  • Process for the production of reagent films and reagent films produced thereby
    Patent number: 4638023
    Abstract: The present invention provides a process for the production of reagent films in which an aqueous synthetic resin dispersion which contains the usual adjuvants and reagents is coated on to a solid substrate or on to a thin fabric in a thin layer and dried, wherein to the crude film mass used for the coating there are added 0.5 to 5% by weight of a scleroprotein hydrolysate with a molecular weight of from 5000 to 50,000 and 0.5 to 10% by weight of a higher alcohol containing 5 to 10 carbon atoms.
    Type: Grant
    Filed: February 13, 1985
    Date of Patent: January 20, 1987
    Assignee: Boehringer Mannheim GmbH
    Inventors: Heinz-Freidrich Trasch, Anselm Rothe, Bernward Sojka, Wolfgang Werner, Hans Wielinger