Patents by Inventor Paul L'Orange

Paul L'Orange 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).

  • Agent for the care and the cleaning of teeth and dentures
    Patent number: 3957967
    Abstract: Disclosed are compositions for the care and the cleaning of human teeth and dentures containing 1,6-di-4'-chlorophenyldiguanidohexane ("chlorohexidine") or the salts thereof and an amount of urea sufficient to reduce brown staining or discoloring of the teeth caused by the chlorohexidine. Also disclosed is a method of treating teeth and dentures comprising contacting them with urea and chlorohexidine.
    Type: Grant
    Filed: July 1, 1974
    Date of Patent: May 18, 1976
    Assignee: Blendax-Werke R. Schneider & Co.
    Inventor: Paul L'Orange