Patents by Inventor William E. Dugan

William E. Dugan 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).

  • Feldspar containing protective composition
    Patent number: 4579891
    Abstract: A feldspar containing protective composition for paving, coating, sealing and the like includes a dry component mixed with a liquid component in an amount necessary to produce a desired consistency of the composition. The dry component includes about 40-50% by weight of feldspar aggregate, about 35-40% by weight of a mineral powder, such as a pottery grade feldspar, up to about 15% by weight of masonry mortar and up to about 7% by weight of cement. The total amount of masonry mortar and cement is at least about 10% by weight of the dry component. The liquid component is formed of an adhesive copolymer in an aqueous emulsion, such as ethylene vinyl acetate.
    Type: Grant
    Filed: November 6, 1984
    Date of Patent: April 1, 1986
    Assignee: Miraco, Inc.
    Inventors: William E. Dugan, Charles T. Roland, Sr.