Patents by Inventor John D. Alberti

John D. Alberti 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: 4213927
    Abstract: A picture phonograph record and method of making the same having an imprinted core sheet sandwiched between transparent layers one of which comprises a relatively thin preformed plastic foil and the other of which is a relatively rigid and thick layer dispersed radially over the core sheet from a hot fluent lump of plastic positioned between heated pressurized mold platens. Sound tracks are impressed onto the face of one or both plastic layers concurrently with the extrusion of the lump to form the thick plastic layer. At least the thicker and usually both layers become inseparably adherent to the adjacent face of the core sheet as an incident of the assembly and sound track impressing operation.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: July 22, 1980
    Inventor: John D. Alberti