Patents by Inventor Ralph Arroyo

Ralph Arroyo 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).

  • Loose leaf binder
    Patent number: 5368333
    Abstract: A loose leaf binder for holding papers and supplies comprising a top cover having an exterior surface and an interior surface; a bottom cover having an exterior surface and an interior surface; a spine having an exterior surface and an interior surface; a hinge mechanism connecting the spine to the top cover and the spine to the bottom cover; a retaining mechanism coupled to the interior surface of the spine for holding papers; and a storage compartment coupled to the exterior surface of the spine for holding writing supplies therein.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: November 29, 1994
    Inventor: Ralph Arroyo