Patents by Inventor Patricia C. Irwin

Patricia C. Irwin 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).

  • Joule heating apparatus for curing powder coated generator rotor coils
    Publication number: 20070285198
    Abstract: A method of curing a coating on a metal conductor comprising: (a) connecting the metal conductor in series with a power transformer; and (b) passing a current through the metal conductor so as to achieve a temperature sufficient to cure the coating.
    Type: Application
    Filed: June 9, 2006
    Publication date: December 13, 2007
    Applicant: General Electric Company
    Inventors: Donald Farquhar, Peter J. Foley, Patricia C. Irwin, Hsin-Pang Wang
  • Thixotropic dielectric fluid for capacitors
    Patent number: 6347033
    Abstract: A thixotropic dielectric fluid that includes vegetable oil, transformer oil, and a clay material. The thixotropic dielectric fluid is particularly suited for use in a capacitor.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: February 12, 2002
    Assignee: General Electric Company
    Inventors: Michael G. Minnick, Patricia C. Irwin, Clive W. Reed
  • Thixotropic dielectric fluid for capacitors
    Patent number: 6177031
    Abstract: A thixotropic dielectric fluid that includes vegetable oil, transformer oil, and a clay material. The thixotropic dielectric fluid is particularly suited for use in a capacitor.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: January 23, 2001
    Assignee: General Electric Company
    Inventors: Michael G. Minnick, Patricia C. Irwin, Clive W. Reed
  • Electrically conductive articles comprising insulation resistant to corona discharge-induced degradation
    Patent number: 5552222
    Abstract: Conductors of electric current in turbine generators and the like are insulated with materials resistant to damage by corona discharge. The insulating materials include an inner layer of a thermoplastic such as a polyetherimide, and an outer layer of a polyorganosiloxane material such as a silicone polyimide or the product of curing a room temperature vulcanizable silicone composition.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: September 3, 1996
    Assignee: General Electric Company
    Inventors: Donald A. Bolon, Patricia C. Irwin
  • Method for salvaging organic thermoplastic values from discarded surface treated organic thermoplastic substrates
    Patent number: 5340839
    Abstract: A method is provided for salvaging organic thermoplastic values from discarded shaped organic thermoplastic substrate which has been surface treated with a protective or decorative organic coating can be salvaged and recycled. The discarded shaped organic thermoplastic substrate, such as a polycarbonate substrate can be granulated, treated with an aqueous alkaline solution which can contain a water miscible organic solvent, such as methanol and thereafter washed until neutral and dried.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: August 23, 1994
    Assignee: General Electric Company
    Inventors: Gregory R. Gillette, Popkin Shenian, Donald A. Bolon, Patricia C. Irwin
  • Solvent resistant silicone polyimides
    Patent number: 5104958
    Abstract: Silicone polyimides resulting from the condensation of para phenylene diamine and an organic dianhydride mixture of a bis(phthalic anhydride)poly(diorganosiloxane), a 2,2 bis[4-(3,4-dicarboxyphenoxy)phenyl] propane dianhydride and hydroquinone dianhydride in a dipolar aprotic solvent have been found to be substantially insoluble in chlorinated organic solvents such as chloroform and useful as melt extrudable wire coating compositions.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: April 14, 1992
    Assignee: General Electric Company
    Inventors: Donald A. Bolon, Patricia C. Irwin
  • Fibers impregnated with epoxy resin mixture, brominated bisphenol and polyphenylene ether
    Patent number: 5096771
    Abstract: Curable compositions containing a reaction product of at least one bisphenol polyglycidyl ether, at least one epoxidized novolak and at least one brominated bisphenol, in combination with a polyphenylene ether and further components including specific catalysts and hardeners, may be used in the preparation of laminates useful as printed circuit boards and having excellent physical and electrical properties.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: March 17, 1992
    Assignee: General Electric Company
    Inventors: Erik W. Walles, John H. Lupinski, Mark Markovitz, Robert E. Colborn, James R. Presley, Michael J. Davis, Michael G. Minnick, Steven J. Kubisen, Jr., John E. Hallgren, Donald A. Bolon, Victoria J. Eddy, Patricia C. Irwin
  • Printed circuit board from fibers impregnated with epoxy resin mixture, halogenated bisphenol and polyphenylene ether
    Patent number: 4975319
    Abstract: Curable compositions containing a reaction product of at least one bisphenol polyglycidyl ether, at least one epoxidized novolak and at least one brominated bisphenol, in combination with a polyphenylene ether and further components including specific catalysts and hardeners, may be used in the preparation of laminates useful as printed circuit boards and having excellent physical and electrical properties.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: December 4, 1990
    Assignee: General Electric Company
    Inventors: Erik W. Walles, John H. Lupinski, Mark Markovitz, Robert E. Colborn, James R. Presley, Michael J. Davis, Michael G. Minnick, Steven J. Kubisen, Jr., John E. Hallgren, Donald A. Bolon, Victoria J. Eddy, Patricia C. Irwin
  • Curable polyphenylene ether-polyepoxide compositions useful in printed circuit board production
    Patent number: 4853423
    Abstract: Curable compositions containing a reaction product of at least one bisphenol polyglycidyl ether, at least one epoxidized novolak and at least one brominated bisphenol, in combination with a polyphenylene ether and further components including specific catalysts and hardeners, may be used in the preparation of laminates useful as printed circuit boards and having excellent physical and electrical properties.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: August 1, 1989
    Assignee: General Electric Company
    Inventors: Erik W. Walles, John H. Lupinski, Mark Markovitz, Robert E. Colborn, James R. Presley, Michael J. Davis, Michael G. Minnick, Steven J. Kubisen, Jr., John E. Hallgren, Donald A. Bolon, Victoria J. Eddy, Patricia C. Irwin