Patents by Inventor Gerard J. Lichtfus

Gerard J. Lichtfus 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).

  • Detergent tablet coating
    Patent number: 4219435
    Abstract: A detergent tablet comprising an alkaline salt is provided with a coating of a hydrated salt having a melting point in the range from 30.degree. C. to 95.degree. C. The coating is applied in the form of a melt of the hydrated salt so that a good coating is formed without the need for lengthy drying times. Preferred materials for the coating are sodium acetate trihydrate, sodium metaborate tetrahydrate and sodium orthophosphate dodecahydrate.
    Type: Grant
    Filed: November 27, 1978
    Date of Patent: August 26, 1980
    Assignee: The Procter & Gamble Company
    Inventors: Daniel Biard, Gerard J. Lichtfus, Hans J. Pracht, Wolfgang Kleeman