Patents by Inventor Joseph Cherenko

Joseph Cherenko 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).

  • Bilayer windshield with an abrasion and solvent resistant polyurethane protective coating
    Patent number: 4923757
    Abstract: An abrasion and solvent resistant polyurethane protective coating for bilayer windshields is formulated by the reaction of a polyester or polyether diol with an aliphatic isocyanate-terminated prepolymer.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: May 8, 1990
    Assignee: PPG Industries, Inc.
    Inventors: James B. O'Dwyer, Wen-Hsuan Chang, Roger L. Scriven, Joseph Cherenko
  • Bilayer windshield with an abrasion and solvent resistant polyurethane protective coating
    Patent number: 4824926
    Abstract: An abrasion and solvent resistant polyurethane protective coating for bilayer windshields is formulated by the reaction of a polyester or polyether diol with an aliphatic isocyanate-terminated prepolymer.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: April 25, 1989
    Assignee: PPG Industries, Inc.
    Inventors: James B. O'Dwyer, Wen-Hsuan Chang, Roger L. Scriven, Joseph Cherenko
  • Release molds for laminating bilayer safety glass
    Patent number: 4277299
    Abstract: A transparent safety glass laminate having an optically acceptable exposed plastic surface is fabricated by laminating an outer glass sheet and an inner preformed plastic sheet under heat and pressure with the plastic surface to be exposed supported against an optically smooth mold, preferably a second glass sheet, which is coated with an optically smooth coating of a material which acts as a release agent to facilitate separation of the plastic surface from the mold after lamination.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: July 7, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Joseph Cherenko, William I. Frey, Joseph D. Kelly, Larry S. Sokol
  • Laminated windshield with improved innerlayer
    Patent number: 4153526
    Abstract: Safety glass is made by laminating to a ply of glass a saturated polyvinyl acetal film incorporating a photoinitiator. The exposed surface of the film is irradiated with ultraviolet light which activates the photoinitiator which in turn initiates crosslinking of the polymer. The polymer film retains its desirable mechanical and optical properties while the crosslinked surface has improved solvent-abrasion resistance.
    Type: Grant
    Filed: March 3, 1978
    Date of Patent: May 8, 1979
    Assignee: PPG Industries, Inc.
    Inventors: Joseph Cherenko, Charles W. Lewis
  • Photocrosslinked innerlayer
    Patent number: 4121985
    Abstract: The surface characteristics of a partially crosslinked polyurethane innerlayer in a bilayer laminate are further improved by treating the polymer film with a small amount of a compound such as tetrahydrofuran, 1,4 dioxane, dimethyl formamide, morpholine, methylene chloride or secondary or tertiary lower alkyl amines in addition to the photoinitiator.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: October 24, 1978
    Assignee: PPG Industries, Inc.
    Inventor: Joseph Cherenko
  • Laminated windshield with improved innerlayer
    Patent number: 4109055
    Abstract: Safety glass made by laminating to a ply of glass a polyvinyl acetal film incorporating a photoinitiator. The exposed surface of the film is irradiated with ultraviolet light which activates the photoinitiator which in turn initiates crosslinking of the polymer. The polymer film retains its desirable mechanical and optical properties while the crosslinked surface has improved solvent-abrasion resistant.
    Type: Grant
    Filed: May 4, 1977
    Date of Patent: August 22, 1978
    Assignee: PPG Industries, Inc.
    Inventors: Joseph Cherenko, Charles W. Lewis
  • Laminated windshield with improved innerlayer
    Patent number: 4039720
    Abstract: Safety glass is made by laminating to a ply of glass a polyurethane film incorporating a photoinitiator. The exposed surface of the film is irradiated with ultraviolet light which activates the photoinitiator which in turn initiates crosslinking of the polymer. The polymer film retains its desirable mechanical and optical properties while the crosslinked surface has improved solvent-abrasion resistant.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: August 2, 1977
    Assignee: PPG Industries, Inc.
    Inventors: Joseph Cherenko, Charles W. Lewis
  • Polyurethane laminates
    Patent number: 3971864
    Abstract: Retarding bloom in normally blooming polyurethane interlayers which are used in laminated windows, particularly motor vehicle safety glass windows in which one major surface of the polyurethane is exposed to the atmosphere, by applying a layer of wax to the exposed major surface of the polyurethane interlayer is disclosed. The resulting window is free from bloom for at least several months.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: July 27, 1976
    Assignee: PPG Industries, Inc.
    Inventors: William R. Beestrice, Joseph Cherenko, William I. Frey