Patents by Inventor Rudolf G. Lukac

Rudolf G. Lukac 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).

  • Carbon filled irradiation cross-linked polymeric insulation for electric cable
    Patent number: 4384944
    Abstract: Insulation for an electric power cable, and a power cable including such insulation, the insulation having an improved dielectric strength and being irradiation cross-linked polymeric material having mixed therewith carbon black having a particle size in the range from about 200 to about 500 millimicrons, the carbon black content being about 10% to about 40% of the weight of the mixture of carbon black and the polymeric material. Also, the cable insulation may be layers of different density polyethylene, at least one of the layers being the described mixture of polyethylene and carbon black.
    Type: Grant
    Filed: September 3, 1981
    Date of Patent: May 24, 1983
    Assignee: Pirelli Cable Corporation
    Inventors: David A. Silver, Rudolf G. Lukac, Solomon Rubinstein
  • Irradiation cross-linked polymeric insulated electric cable
    Patent number: 4317001
    Abstract: Insulation for an electric power cable, and a power cable including such insulation, the insulation having an improved dielectric strength and being irradiation cross-linked polymeric material having mixed therewith carbon black having a particle size in the range from about 200 to about 500 millimicrons, the carbon black content being about 10% to about 40% of the weight of the mixture of carbon black and the polymeric material. Also, the cable insulation may be layers of different density polyethylene, at least one of the layers being the described mixture of polyethylene and carbon black.
    Type: Grant
    Filed: September 18, 1980
    Date of Patent: February 23, 1982
    Assignee: Pirelli Cable Corp.
    Inventors: David A. Silver, Rudolf G. Lukac, Solomon Rubinstein