Patents by Inventor David I. Richardson

David I. Richardson 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).

  • Flavored dental articles
    Patent number: 4033365
    Abstract: A stabilized, flavored dental article for cleaning the interproximal surfaces of the teeth such as dental floss or dental tape comprising filaments with a non-wax polymeric coating containing spray-dried flavor particles.
    Type: Grant
    Filed: January 23, 1976
    Date of Patent: July 5, 1977
    Assignee: Johnson & Johnson
    Inventors: Philip B. Klepak, David I. Richardson, Robert G. Fourman