Patents by Inventor Linda K. Richards

Linda K. Richards 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).

  • Patent number: 5159943
    Abstract: A dental floss dispenser is designed to retain a roll of dental floss which may be dispensed and cut through an opening. The floss is provided in preselected lengths interconnected by shorter lengths of thread. Once dispensed and cut in a medial portion of the thread, the threaded ends of a length of floss may be held to use the floss which prevents any wastage of flossing material. In modified embodiments, the lengths of thread may be provided with small knots to indicate where to cut the thread and to provide a better grip during a use of the floss. Further, granules of fluoride may be attached to a floss strip to act both as an abrasive and as a means of applying fluoride between teeth as the granules dissolve.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: November 3, 1992
    Inventors: Linda K. Richards, Norvel D. Richards