Patents by Inventor Robert E. Sharpe

Robert E. Sharpe 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: 4098934
    Abstract: A container having a high mechanical service strength and shatter resistance comprises a glass container body and an overlying containment coating constituted by a plastic film. The mechanical properties of the film are such that, when subjected to tensile testing at a film extension rate of 10 in./min., the film exhibits a tensile strength of at least about 300 lbs./sq. in., an elongation of at least about 80%, and a modulus of elasticity in tension of not more than about 1,000 lbs./sq. in. throughout the course of the extension of the film.
    Type: Grant
    Filed: October 23, 1975
    Date of Patent: July 4, 1978
    Assignee: Liberty Glass Company
    Inventors: M. Clifford Brockway, Robert E. Sharpe
  • Patent number: 3944100
    Abstract: A containment coating for glass containers. The composition includes a principal film-forming constituent comprising an acrylate latex containing a particulate resin comprising a copolymer of acrylonitrile and ethyl acrylate. The coating also contains at least one additional latex whose presence enhances the containment properties of the film after curing. Two such auxiliary latexes exhibit this capability and the coating composition contains either or both of them. One of these is a vinyl latex whose resin solids comprise a copolymer of ethylene and vinyl acetate. The other is a vinyl/acrylic latex whose resin solids comprise a copolymer of vinyl acetate and a lower alkyl acrylate. Hexamethoxymethylmelamine or a methylated urea-formaldehyde resin is included as a cross-linking agent and either polyacrylamide or a high molecular weight water-soluble polyethylene oxide resin is present as a thickener and a thixotrope.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: March 16, 1976
    Assignee: Liberty Glass Company
    Inventors: M. Clifford Brockway, Robert E. Sharpe