Patents by Inventor Herbert Frotscher

Herbert Frotscher 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).

  • Method of cleaning textiles
    Patent number: 3933425
    Abstract: A method of chemically cleaning textiles in organic solvents with the use of cleaning intensifiers and small quantities of water, comprises bringing the solvents during the cleaning operation into contact with inorganic or organic adsorption materials which are provided with an insolubly fixed impregnation of polycondensation products containing polyalkylene glycol units.
    Type: Grant
    Filed: June 29, 1973
    Date of Patent: January 20, 1976
    Assignee: Henkel & Cie GmbH
    Inventors: Werner Grunewalder, Herbert Frotscher