Patents by Inventor John C. Devins

John C. Devins 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).

  • Abrasion-resistant plastic articles
    Patent number: 5051308
    Abstract: An abrasion-resistant article and method for making is disclosed. The article includes a plastic substrate and a gradational coating applied by plasma-enhanced chemical vapor deposition to the surface thereof.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: September 24, 1991
    Assignee: General Electric Company
    Inventors: Clive W. Reed, Stefan J. Rzad, John C. Devins
  • Abrasion-resistant plastic articles and method for making them
    Patent number: 4927704
    Abstract: An abrasion-resistant article and method for making is disclosed. The article includes a plastic substrate and a gradational coating applied by plasma-enhanced chemical vapor deposition to the surface thereof.
    Type: Grant
    Filed: April 11, 1989
    Date of Patent: May 22, 1990
    Assignee: General Electric Company
    Inventors: Clive W. Reed, Stefan J. Rzad, John C. Devins
  • Method for forming abrasion-resistant polycarbonate articles, and articles of manufacture produced thereby
    Patent number: 4842941
    Abstract: An abrasion-resistant article and method for making is disclosed. The article includes a polycarbonate substrate, an interfacial layer of an adherent resinous composition on the substrate, and an abrasion-resistant top layer applied on the interfacial layer by plasma-enhanced chemical vapor deposition.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: June 27, 1989
    Assignee: General Electric Company
    Inventors: John C. Devins, Clive W. Reed, Stefan J. Rzad
  • Additives to prevent electrostatic charge buildup in fluids in high voltage systems
    Patent number: 4694375
    Abstract: An ionic material is added to a halocarbon insulating fluid used to cool high voltage equipment in order to prevent the buildup of electrtostatically generated charge. The ionic additive allows leakage of charge from the insulating fluid so as to prevent dangerously high voltage buildup while at the same time withstanding the high voltage applied to the system.
    Type: Grant
    Filed: March 22, 1982
    Date of Patent: September 15, 1987
    Assignee: General Electric Company
    Inventors: John C. Devins, Matthew A. Dranchak, Stefan J. Rzad
  • Remote pressure sensor
    Patent number: 4522065
    Abstract: The pressure of a gas within an enclosure is measured without making physical contact with the gas by focusing radiation from a laser onto a section of the gas and, while varying the intensity of the radiation, monitoring the section under measurement for electrical breakdown, as indicated by emitted light or suitable breakdown indicia, such as radio noise. The absolute gas pressure at the section of the gas under measurement is determined from a calibration curve relating the intensity of the beam to the pressure at which breakdown occurs for the particular gas being monitored.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: June 11, 1985
    Assignee: General Electric Company
    Inventors: John C. Devins, Amandus H. Sharbaugh
  • Means to improve the dielectric performance of an insulative conduit with a flow of liquid dielectric coolant therein
    Patent number: 4513346
    Abstract: In high voltage electrical equipment, improvement in the dielectric performance of an insulative conduit having a flow of liquid dielectric coolant therein is effected by providing a suitably selected low conductance path in contact with the dielectric coolant.
    Type: Grant
    Filed: April 27, 1983
    Date of Patent: April 23, 1985
    Assignee: General Electric Company
    Inventor: John C. Devins