Patents by Inventor Alan N. Hall

Alan N. Hall 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).

  • Anti-caries preparations
    Patent number: 4282204
    Abstract: Cationic polysaccharides, preferably quaternary ammonium galactomannans, are used, for example in dentifrices, mouthwashes and ointments, to inhibit dental caries by binding oral bacteria.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: August 4, 1981
    Assignee: Nicholas Proprietary Limited
    Inventors: Glyn O. Phillips, Alan N. Hall, Stephen D. Hogg