Patents by Inventor Mark E. Pflugfelder

Mark E. Pflugfelder 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 producing concentrated laundry detergent by manufacture of low moisture content detergent slurries
    Patent number: 5453215
    Abstract: Detergent powders of high bulk density, containing anionic and nonionic surfactant and builders are prepared by spray-drying a low moisture content slurry containing liquid active surfactants to suspend inorganic solids including selected builders. A viscosity adjuster may be added to improve processability.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: September 26, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: William M. Karpusiewicz, Andra J. Vlosky, Feng-Lung G. Hsu, Charles F. Irwin, Mark E. Pflugfelder