Patents by Inventor Marion Donovan

Marion Donovan 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: 5560377
    Abstract: The present disclosure relates to an improved floss implement comprising a composite of a multifilament yarn bonded to an extruded monofilament. Both elements are made of polymer compounds, preferably nylon, to provide desired ease of use of the monofilament as a leader to pass the implement easily between the teeth or under bridges while the multifilament yarn can be provided in looped embodiments, as a bush element or in the form of one or more tails thus providing superior flossing action when passed between the teeth or under bridges.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: October 1, 1996
    Inventor: Marion Donovan
  • Patent number: 4523600
    Abstract: The disclosure concerns an improved dental hygiene technique for removing plaque from human teeth wherein a loop of multifilament flossing thread is trained about fingers on opposite hands of the user and worked in the spaces between the teeth while maintained taut. The flossing loop may be joint-free and comprise many turns of a single, continuous filament, or it may be made from multifilament thread and have a joint formed by gluing, heat sealing, knotting or air splicing. The last mentioned type of loop may include at least one protruding tail which performs a mopping function during plaque removal.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: June 18, 1985
    Inventor: Marion Donovan
  • Patent number: 4169534
    Abstract: The disclosure is that of an invention directed to a garment hanger in which a multiplicity of garments, such as pants, are suspended, waist down, from a normally horizontal frame that is suspended in a clothes closet in such a manner that the leg bottoms or cuffs are completely visible for selection and extraction of a single pair and in such a manner that a pair of pants to be hung can be attached at the front of the hanger unit while sliding any other pairs of pants toward the rear thereof.
    Type: Grant
    Filed: July 19, 1978
    Date of Patent: October 2, 1979
    Inventor: Marion Donovan