Patents by Inventor Donald A. M. Mackay

Donald A. M. Mackay 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).

  • Long-lasting mint-flavored chewing gum
    Patent number: 4045581
    Abstract: A mint-flavored chewing gum which contains a water-insoluble gum base, sugars, flavoring and, the free acid form of saccharin, in particulate form, dispersed in the insoluble gum base. The particulate artificial sweetener, undergoes controlled release from the gum base for relatively long periods, for example, for 30 minutes or more, at a concentration below the bitter threshold, so that the chewing gum delivers a sweet taste during such time unaccompanied by a metallic or bitter aftertaste.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: August 30, 1977
    Assignee: Life Savers, Inc.
    Inventors: Donald A. M. Mackay, Frank Witzel, Basant K. Dwivedi, Daniel Schoenholz