Patents by Inventor John K. Beasley

John K. Beasley 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).

  • Electrical cable insulated with a tree-resistant ethylene polymer composition
    Patent number: 4456655
    Abstract: Propagation of electrical trees and water trees in electrical insulation made of ethylene homopolymers or copolymers with an unsaturated monomer is inhibited by the addition to the insulating composition of an organic carboxylic ester having at least one aromatic ring and at least three carboxylic ester groups, the ester being liquid at the operating temperature of the electrical equipment in which the insulation is used. The main utility of the inhibitors of this invention is in the primary insulation for power transmission cables, especially those used in high voltage applications.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: June 26, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John K. Beasley, Edward J. Urban
  • Tree-resistant ethylene polymer compositions containing aromatic polycarboxylic acid
    Patent number: 4374224
    Abstract: Propagation of electrical trees and water trees in electrical insulation made of ethylene homopolymers or copolymers with an unsaturated monomer is inhibited by the addition to the insulating composition of an organic carboxylic ester having at least one aromatic ring and at least three carboxylic ester groups, the ester being liquid at the operating temperature of the electrical equipment in which the insulation is used. The main utility of the inhibitors of this invention is in the primary insulation for power transmission cables, especially those used in high voltage applications.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: February 15, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John K. Beasley, Edward J. Urban
  • Low attenuation optical fiber of deuterated polymer
    Patent number: 4138194
    Abstract: Light-transmitting optical fiber having a core of a deuterated acrylate polymer exhibits remarkably high transmission of light in the visible and at certain wavelengths in the near-infrared region of the spectrum.
    Type: Grant
    Filed: October 14, 1977
    Date of Patent: February 6, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John K. Beasley, Richard Beckerbauer, Henry M. Schleinitz, Frank C. Wilson
  • Low attenuation optical fiber of deuterated polymer
    Patent number: RE31868
    Abstract: Light-transmitting optical fiber having a core of a .[.deuterated acrylate.]. polymer .Iadd.selected from the group consisting of a deuterated methacrylate homopolymer, a deuterated methacrylate copolymer and a deuterated methacrylate/acrylate copolymer which .Iaddend.exhibits remarkably high transmission of light in the visible and at certain wavelengths in the near-infrared region of the spectrum.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: April 16, 1985
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: John K. Beasley, Richard Beckerbauer, Henry M. Schleinitz, Frank C. Wilson
  • Tree-resistant ethylene polymer compositions
    Patent number: RE31874
    Abstract: Propagation of electrical trees and water trees in electrical insulation made of ethylene homopolymers or copolymers with an unsaturated monomer is inhibited by the addition to the insulating composition of an organic carboxylic ester having at least one aromatic ring and at least three carboxylic ester groups, the ester being liquid at the operating temperature of the electrical equipment in which the insulation is used. The main utility of the inhibitors of this invention is in the primary insulation for power transmission cables, especially those used in high voltage applications.
    Type: Grant
    Filed: November 2, 1983
    Date of Patent: April 30, 1985
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: John K. Beasley, Edward J. Urban