Patents by Inventor Klaus Hirte

Klaus Hirte 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 manufacture of detergent powder
    Patent number: 4549978
    Abstract: A process for manufacturing detergent powder containing heat-sensitive components is disclosed. The process involves preparation of two separate crutcher slurries, one containing the relatively heat-stable components which is sprayed in a conventional manner and a second containing heat-sensitive components which is sprayed into the spray-drying tower at a level lower than the level at which the drying air is injected. Desirably the second slurry is sprayed in a direction which includes an upward component, so as to lengthen the pathway of the sprayed droplets.
    Type: Grant
    Filed: October 25, 1984
    Date of Patent: October 29, 1985
    Assignee: Lever Brothers Company
    Inventors: Elfed H. Evans, Klaus Hirte, Gerd Stremmel