Patents Assigned to GrafTech International Holdings Inc.
  • Publication number: 20120113595
    Abstract: An electronic device includes an electronic component with a mating surface. A thermal interface sheet is attached to the mating surface. A substrate carries the electronic device and includes a face. The electronic component is secured to the substrate with the thermal interface sheet positioned between the mating surface and the face. The mating surface is relatively less flat than the face and the mating surface is relatively smoother than the face.
    Type: Application
    Filed: November 7, 2011
    Publication date: May 10, 2012
    Applicant: GRAFTECH INTERNATIONAL HOLDINGS INC.
    Inventor: James T. Petroski
  • Patent number: 8165183
    Abstract: Disclosed herein is an electrode joint having a first carbon body having at least one end portion that includes a male tang with a convex tip and a second carbon body having a female socket with a concave base.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: April 24, 2012
    Assignee: GrafTech International Holdings, Inc.
    Inventors: Bill Varela, Michael Frastaci
  • Publication number: 20120040141
    Abstract: A method for preparing resin-impregnated graphite articles, including providing a sheet of compressed particles of exfoliated graphite having two major surfaces; impregnating the sheet with a first resin system to form a resin-impregnated sheet; surface treating the resin-impregnated sheet to form at least one structure on at least one of the major surfaces of the sheet to form a surface treated sheet; and treating the sheet with a second resin system.
    Type: Application
    Filed: October 25, 2011
    Publication date: February 16, 2012
    Applicant: GrafTech International Holdings Inc.
    Inventors: Zdenka Brunovska, Bradley E. Reis, Jeffrey J. Gough, Lawrence K. Jones, Thomas W. Weber, David J. Stuart, Suha M. Yazici, Jeremy Klug, Franco Frate
  • Patent number: 8080127
    Abstract: A carbon foam evaporator is described which can be used in a wide variety of operating conditions. The evaporator utilizes a carbon foam with a bi-model pore distribution. The carbon foam is thermally stable up to temperatures of at least 300° C., is rigid, and has a compressive strength of at least 100 psi. The carbon foam is also resistant to chemical attacks.
    Type: Grant
    Filed: April 15, 2007
    Date of Patent: December 20, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventor: Chong Chen
  • Patent number: 8067091
    Abstract: A method for preparing resin-impregnated graphite articles, including providing a sheet of compressed particles of exfoliated graphite having two major surfaces; impregnating the sheet with a first resin system to form a resin-impregnated sheet; surface treating the resin-impregnated sheet to form at least one structure on at least one of the major surfaces of the sheet to form a surface treated sheet; and treating the sheet with a second resin system.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: November 29, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Zdenka Brunovska, Bradley E. Reis, Jeffrey J. Gough, Lawrence K. Jones, Thomas W. Weber, David J. Stuart, Suha M. Yazici, Jeremy Klug, Franco Frate
  • Publication number: 20110280274
    Abstract: A reduced puffing needle coke is formed from decant oil, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.
    Type: Application
    Filed: July 21, 2011
    Publication date: November 17, 2011
    Applicant: GrafTech International Holdings, Inc.
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Aaron Tomasek, Richard L. Shao
  • Publication number: 20110280275
    Abstract: A reduced puffing needle coke is formed, which includes a reduced nitrogen content within the coke so that the coke particles do not experience as much puffing during the formation of graphitized carbon articles produced from such coke upon heating to graphitization temperatures.
    Type: Application
    Filed: July 21, 2011
    Publication date: November 17, 2011
    Applicant: GrafTech International Holdings, Inc.
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Richard T. Lewis, Aaron Tomasek, Richard L. Shao
  • Publication number: 20110274136
    Abstract: A reduced puffing needle coke is formed, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.
    Type: Application
    Filed: July 21, 2011
    Publication date: November 10, 2011
    Applicant: GrafTech International Holdings, Inc
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Aaron Tomasek, Richard L. Shao
  • Patent number: 8021750
    Abstract: A structural insulated panel for use in a mine safe room, which includes a carbon foam core having a high ratio of compressive strength to density, desirable fire retardant properties, and resistance to environmental stress. The carbon foam structural insulated panel also includes a first layer and a second layer bound to a first surface and second surface of the carbon foam core.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: September 20, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Richard L. Shao, Mark Segger, Yevegiy P. Griffin
  • Patent number: 8007658
    Abstract: A reduced puffing needle coke is formed, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: August 30, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Aaron Tomasek, Richard L. Shao
  • Patent number: 8007660
    Abstract: A reduced puffing needle coke is formed from decant oil, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: August 30, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Aaron Tomasek, Richard L. Shao
  • Patent number: 8007659
    Abstract: A reduced puffing needle coke is formed, which includes a reduced nitrogen content within the coke so that the coke particles do not experience as much puffing during the formation of graphitized carbon articles produced from such coke upon heating to graphitization temperatures.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: August 30, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Ching-Feng Chang, Irwin C. Lewis, Richard T. Lewis, Aaron Tomasek, Richard L. Shao
  • Patent number: 7993779
    Abstract: A carbon foam battery useful for electrical applications is disclosed which includes a relatively low conductivity low density high porosity carbon foam.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: August 9, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventor: Diane M. Artman
  • Patent number: 7991039
    Abstract: A system and method for monitoring the operating parameters of an electric arc furnace having a primary electrical circuit comprising a primary current transformer. The method includes monitoring the furnace's primary current transformer; collecting data therefrom; transmitting the collected data to a server having an operatively connected monitor; and displaying the collected data on the monitor in substantially real-time. The server also collects information about the performance of the furnace from a programmable logic computer and information entered manually by an operator at a furnace monitoring viewer system, which may also be displayed in substantially real-time on the monitor.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: August 2, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Ronald E. Gerhan, Nicolas Lugo, Dave A. Lehr, Fernando Martinez Garcia
  • Patent number: 7972698
    Abstract: The core panel includes a plurality of carbon foam blocks. One or more of the blocks have a cell volume wherein at least about 90% of the cells have a diameter of between at least about 10 microns and about 150 microns. Also at least about 1% of the cell volume of the block has cells having a diameter of about 0.8 microns to about 3.5 microns.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: July 5, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, Irwin C. Lewis, Richard L. Shao, Mark Segger
  • Patent number: 7892636
    Abstract: A carbon foam composite including a carbon foam skeleton having a supplemental material therein, the composite useful for, inter alia, a variety of applications including applications requiring durability and water resistance. Also included is a method for making such carbon foam composite materials.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: February 22, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Douglas J. Miller, David M. Kaschak, Richard L. Shao
  • Patent number: 7889502
    Abstract: A circuit assembly including a substrate which has a dielectric layer, a heat spreader layer located at a first surface of the substrate, a heat generating component located at a second surface of the substrate, and a thermal pathway in thermal connection between the heat spreader layer and the heat generating component.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: February 15, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Bradley E. Reis, James R. Cartiglia
  • Publication number: 20110027654
    Abstract: A carbon foam battery useful for electrical applications is disclosed which includes a relatively low conductivity low density high porosity carbon foam.
    Type: Application
    Filed: October 18, 2010
    Publication date: February 3, 2011
    Applicant: GrafTech International Holdings Inc.
    Inventor: Diane M. Artman
  • Patent number: 7838146
    Abstract: A carbon foam battery useful for electrical applications is disclosed which includes a relatively low conductivity low density high porosity carbon foam.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: November 23, 2010
    Assignee: GrafTech International Holdings, Inc.
    Inventor: Diane M. Artman
  • Patent number: RE42775
    Abstract: Insulation materials suited to high temperature applications, such as the insulation of furnaces, are formed from a mixture of pitch carbon fibers, such as isotropic pitch carbon fibers, and a binder comprising a solution of sugar in water. The sugar solution is preferably at a concentration of from 20-60% sucrose to yield a low density material having high flexural strength and low thermal conductivity when carbonized to a temperature of about 1800° C.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: October 4, 2011
    Assignee: GrafTech International Holdings Inc.
    Inventors: Charles C. Chiu, Irwin Charles Lewis, Ching-Feng Chang