Patents by Inventor Virginia M. Hempel

Virginia M. Hempel 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).

  • Toilet bowl cleaning method
    Patent number: 6425406
    Abstract: Disclosed herein are methods of cleaning toilet basins and urinals. Cleaning components are applied to the interior surfaces of these basins other than through the flush water, without scrubbing. They are allowed to be in contact with the surface of the basin for at least one-half hour before normal use of the toilet/urinal. Preferred methods for applying the cleaning compositions are with a spray bottle or an aerosol can, with application occurring on a daily, overnight basis.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: July 30, 2002
    Assignee: S. C. Johnson & Son, Inc.
    Inventors: Michael E. Klinkhammer, Timothy I. Moodycliffe, Virginia M. Hempel