Patents by Inventor Stephen P. Bartus, Jr.

Stephen P. Bartus, Jr. 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: 5593786
    Abstract: Laminated safety glass includes a pair of glass sheets bonded together with a self-adhering composite interlayer. The composite interlayer is formed of a support layer including a plasticized PVC containing film and a polymeric adhesive layer on one, or preferably both, of the major surfaces of the support layer. The adhesive layers are formed of a polymeric material which is capable of adhering to the PVC containing support layer and to the glass sheets. The respective refractive indices of the adhesive layers and the support layer are matched as closely as possible in order to eliminate optical distortion caused by interfacial reflections of incident light. A preferred copolymer resin for forming the adhesive layers is poly(vinyl chloride-co-vinyl acetate-co-maleic acid).
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: January 14, 1997
    Assignee: Libbey-Owens-Ford Company
    Inventors: Anthony A. Parker, David A. Strickler, Stephen P. Bartus, Jr., Susan M. Wolke
  • Patent number: 5028287
    Abstract: The present invention concerns a unique method for producing an anti-lacerative glass assembly wherein a plastic composite anti-laceration sheet is to be bonded to a glass substrate sheet. The plastic anti-laceration sheet includes an inner layer of polyvinyl butyral adpated to abut the glass substrate sheet, an intermediate layer of polyester, and an outer layer of abrasion resistant material. A glass cover sheet having substantially the same curvature as the glass substrate sheet is utilized to press the anti-laceration sheet into bonding engagement with the glass substrate sheet. In accordance with the present invention, the bonding operation is accomplished by heating the laminated glass assembly to a predetermined temperature in the range of 285.degree. F. to 305.degree. F. The present invention also concerns the use of a unique vacuum ring construction which is mounted about the periphery of the laminated assembly and it utilized to de-air the assembly.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: July 2, 1991
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Siegfried H. Herliczek, Charles E. Ash, Jr., Stephen P. Bartus, Jr., Ronald L. Toth
  • Patent number: 4242403
    Abstract: Multi-layer automotive glazing units that include, in their structures, transparent substrates with protective covers or shields over surfaces of the substrates; and that combine penetration resistant body portions with exposed abrasion resistant surfaces of a silica reinforced organopolysiloxane compound; and methods of producing such units.
    Type: Grant
    Filed: August 2, 1976
    Date of Patent: December 30, 1980
    Assignee: Libbey-Owens-Ford Company
    Inventors: Paul T. Mattimoe, Theodore J. Motter, Stephen P. Bartus, Jr.
  • Patent number: 4112171
    Abstract: Multi-layer automotive glazing units that include, in their structures, transparent substrates with protective covers or shields over surfaces of the substrates and that combine penetration resistant body portions with exposed abrasion resistant surfaces; and methods of producing such units.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: September 5, 1978
    Assignee: Libbey-Owens-Ford Company
    Inventors: Theodore J. Motter, Paul T. Mattimoe, Stephen P. Bartus, Jr.