Patents by Inventor Karl A. Scheller

Karl A. Scheller 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 preparing solid powder formulations having different colors
    Patent number: 5089256
    Abstract: The process for the preparation of containers comprising two or more partial regions separated from each other of solid cast powder formulations having different colors employs containers into which separating bridges of a pasty composition have been injected, said composition being similar to the subsequently cast solid powder formulations. The bridges prevent the partial regions having different colors from coalescing.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: February 18, 1992
    Assignee: Wurttembergische Parfumerie-Fabrik GmbH
    Inventors: Hans U. Scheller, Karl A. Scheller
  • Electric toothbrush
    Patent number: 4450599
    Abstract: An electric toothbrush having a timer for monitoring brushing time. The timer is activated when the pressure exertred on the bristles exceeds a predetermined minimum pressure to ensure proper brushing for a predetermined minimum period of time.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: May 29, 1984
    Assignee: Wurttembergische Parfumerie-Fabrik GmbH
    Inventors: Hans U. Scheller, Karl A. Scheller