Patents by Inventor Kenneth William Hetherington

Kenneth William Hetherington 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).

  • Dentifrice
    Patent number: 3995024
    Abstract: Dentifrice compositions containing a water-soluble anionic cellulose derivative and stable against syneresis due to its content of a water-soluble salt of a hydroxybenzoate ester and a water-swellable clay of natural or synthetic origin. The salt is preferably a sodium lower alkyl p-hydroxybenzoate.
    Type: Grant
    Filed: March 20, 1975
    Date of Patent: November 30, 1976
    Assignee: Beecham Group Limited
    Inventors: Brian Rae Hawking, Kenneth William Hetherington