Patents by Inventor Werner Grunewalder

Werner Grunewalder 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).

  • Patent number: 4115061
    Abstract: A method for cleaning greatly soiled textiles with organic solvents and aqueous detergent solutions consisting essentially of (1) contacting greatly soiled textiles with a cleaning liquor consisting of a customary water-immiscible, organic dry-cleaning solvent and an aqueous solution of a detergent composition containing from 3.5% to 35% by weight of said solution of an anionic surface-active compound with a low solubility in said organic dry-cleaning solvent, wherein from 0.5 to 10 gm of said detergent composition are present per liter of said cleaning liquor for a time sufficient to clean said soiled textiles and to have said textiles absorb said aqueous solution, (2) removing the soiled organic dry-cleaning solvent from said textiles containing absorbed aqueous solution, (3) contacting said textiles containing absorbed aqueous solution with water for a time sufficient to completely wash said textiles, (4) rinsing said textiles with water, and (5) recovering said cleaned textiles.
    Type: Grant
    Filed: January 26, 1977
    Date of Patent: September 19, 1978
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventor: Werner Grunewalder
  • 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