Patents by Inventor Frederic J. Klug

Frederic J. Klug 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).

  • Patent number: 6042463
    Abstract: A supported polycrystalline compact (PC) cutter made under high temperature, high pressure (HT/HP) processing conditions having non-planar interfaces between the PC layer and a cemented carbide support layer. The carbide PC interface geometry is such that one or more protrusions extend from the support layer into the PC layer. The protrusions have a low cobalt metal binder content of about 3-9% by weight. The low cobalt metal binder content in the protrusions results in enhanced performance and improved resistance to cracking during installation and/or to brazing breakage.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: March 28, 2000
    Assignee: General Electric Company
    Inventors: David M. Johnson, Frederic J. Klug
  • Patent number: 5321335
    Abstract: The invention relates to a sealing composition suitable for bonding yttria or alumina ceramic members, or bonding refractory metals to the ceramics. The sealing composition has, in mole percent, about 0.5 to 40 percent yttria, about 45 to 65 percent alumina, up to 10 mole percent strontia, and the balance substantially calcia.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: June 14, 1994
    Assignee: General Electric Company
    Inventors: Frederic J. Klug, Subramaniam Venkataramani, Kenneth W. Lay
  • Patent number: 4427785
    Abstract: Optically translucent theoretically dense body of mullite is produced by pressing an amorphous mixed oxide powder composition of from about 72.5 weight % to about 76.5 weight % Al.sub.2 O.sub.3 /balance SiO.sub.2 into a compact of density of at least 1.0 g/cc, sintering the compact in oxygen or a vacuum of 0.05 torr to 1 torr producing a gas-impermeable compact, hot isostatically pressing the gas-impermeable compact to theoretical density, and with respect to compositions ranging from higher than about 74 wt % Al.sub.2 O.sub.3 /balance SiO.sub.2, annealing the theoretically dense body.
    Type: Grant
    Filed: May 25, 1982
    Date of Patent: January 24, 1984
    Assignee: General Electric Company
    Inventors: Svante Prochazka, Frederic J. Klug
  • Patent number: 4418024
    Abstract: Amorphous mixed oxide powder composed of from about 74 weight % to about 76.5 weight % Al.sub.2 O.sub.3 balance SiO.sub.2 is pressed into a compact with a density of at least 1 g/cc, fired in oxygen or vacuum of 0.05 to 1 torr producing a gas-impermeable compact, and sintered in air, argon, helium, nitrogen or mixtures thereof producing an optically translucent theoretically dense body of mullite.
    Type: Grant
    Filed: May 25, 1982
    Date of Patent: November 29, 1983
    Assignee: General Electric Company
    Inventors: Svante Prochazka, Frederic J. Klug
  • Patent number: 4418025
    Abstract: Amorphous mixed oxide powder composed of from about 74 weight % to about 76.5 weight % Al.sub.2 O.sub.3 balance SiO.sub.2 is pressed into a compact with a density of at least 1 g/cc and sintered in oxygen producing an optically translucent theoretically dense body of mullite.
    Type: Grant
    Filed: May 25, 1982
    Date of Patent: November 29, 1983
    Assignee: General Electric Company
    Inventors: Svante Prochazka, Frederic J. Klug
  • Patent number: 4246215
    Abstract: A method of firing alumina-based ceramic core compacts includes firing the compact in a controlled atmosphere in a closed retort whereby at least a portion of the gas of the controlled atmosphere is caused to flow down, around and through the porous compact by aspiration.
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: January 20, 1981
    Assignee: General Electric Company
    Inventors: Wayne D. Pasco, Frederic J. Klug, Marcus P. Borom
  • Patent number: 4221748
    Abstract: A method for simultaneously forming an integral porous outer barrier layer having a density gradient therein on selected external surfaces of a fired ceramic article and for increasing the porosity content and crushability characteristics thereof embodies the firing of a ceramic compact comprising a reactant fugitive filler material and a ceramic material in a controlled atmosphere.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: September 9, 1980
    Assignee: General Electric Company
    Inventors: Wayne D. Pasco, Frederic J. Klug
  • Patent number: 4221594
    Abstract: A reactant fugitive filler material is employed in a material composition which includes alumina-based ceramics of one or more particle sizes. The reactant fugitive material provides sufficient reactant material at an elevated temperature to form a fired ceramic article which has a porous microstructure in which the grain morphology is characteristic of grains which have undergone vapor phase transport action.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: September 9, 1980
    Assignee: General Electric Company
    Inventors: Charles D. Greskovich, Frederic J. Klug, Wayne D. Pasco
  • Patent number: 4219328
    Abstract: A setter is configured to minimize distortion of a core supported during firing. The configuration also provides for adequate gas flow both to envelope the core and to provide an aspiration effort to cause the gas to be drawn downwardly through and about the core structure to the interior of the setter to enhance the removal of reaction products therefrom. A retort, preferably made of molybdenum, is provided to enhance the effects of the setter configuration.
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: August 26, 1980
    Assignee: General Electric Company
    Inventors: Wayne D. Pasco, Frederic J. Klug, Marcus P. Borom
  • Patent number: 4191720
    Abstract: A method for simultaneously forming an integral barrier layer on selected external surfaces of a fired ceramic article and for increasing the porosity content and crushability characterstics thereof embodies the firing of a ceramic compact comprising a reactant fugitive filler material and a ceramic material in a controlled atmosphere.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: March 4, 1980
    Assignee: General Electric Company
    Inventors: Wayne D. Pasco, Frederic J. Klug
  • Patent number: 4191721
    Abstract: A method for increasing the porosity and crushability characteristics thereof embodies the firing of a ceramic compact comprising a reactant fugitive filler material and a ceramic material in a controlled atmosphere.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: March 4, 1980
    Assignee: General Electric Company
    Inventors: Wayne D. Pasco, Frederic J. Klug, Svante Prochazka
  • Patent number: 4189326
    Abstract: Mixed oxide compounds La.sub.2 O.sub.3.11Al.sub.2 O.sub.3, NdAlO.sub.3 and nonstoichiometric MgAl.sub.2 O.sub.3 are suitable for making cores and molds for casting advanced superalloy materials such as NiTaC-13.
    Type: Grant
    Filed: January 5, 1978
    Date of Patent: February 19, 1980
    Inventors: Irvin C. Huseby, Frederic J. Klug
  • Patent number: 4187266
    Abstract: A method for simultaneously forming an integral barrier layer on selected external surfaces of a fired alumina-based compound ceramic article and for increasing the porosity and crushability characteristics thereof embodies the sintering of a ceramic compact comprising a reactant fugitive filler material and the alumina-based compound ceramic material in a controlled atmosphere.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: February 5, 1980
    Assignee: General Electric Company
    Inventors: Charles D. Greskovich, Frederic J. Klug, Wayne D. Pasco
  • Patent number: 4184885
    Abstract: A fired alumina article having a core of material having from 20 to 65 percent continuous porosity by volume and desired crushability characteristics and an integral outer barrier layer consisting of porous alumina having a density gradient.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: January 22, 1980
    Assignee: General Electric Company
    Inventors: Wayne D. Pasco, Frederic J. Klug
  • Patent number: 4178187
    Abstract: Mixed oxide compounds La.sub.2 O.sub.3.11Al.sub.2 O.sub.3, NdAlO.sub.3 and nonstoichiometric MgAl.sub.2 O.sub.3 are suitable for making cores and molds for casting advanced superalloy materials such as NiTaC-13.
    Type: Grant
    Filed: January 5, 1978
    Date of Patent: December 11, 1979
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Frederic J. Klug
  • Patent number: 4164424
    Abstract: A core for investment casting directionally solidified eutectic and superalloy material consists of alumina which has a porous microstructure in which the grain morphology is characteristic of grains which have undergone vapor phase transport action.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: August 14, 1979
    Assignee: General Electric Company
    Inventors: Frederic J. Klug, Wayne D. Pasco, Svante Prochazka
  • Patent number: 4162173
    Abstract: Cores made of either Y.sub.2 O.sub.3, Y.sub.3 Al.sub.5 O.sub.12, LaAlO.sub.3, MgAl.sub.2 O.sub.4 or Al.sub.2 O.sub.3 are removed from castings of advanced superalloy materials by immersion in a molten salt bath of either Li.sub.3 AlF.sub.6 or a mixture of CaF.sub.2 -NaF.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: July 24, 1979
    Assignee: General Electric Company
    Inventors: Ronald H. Arendt, Marcus P. Borom, Irvin C. Huseby, Frederic J. Klug
  • Patent number: 4108672
    Abstract: An alumina core for investment casting directionally solidified eutectic and superalloy materials consists of a central portion which has porosity which is continuous throughout. The material of the central portion has a micro-structure which is characteristic of alumina grains which have undergone vapor phase transport action. An outer layer of alumina encompasses the central portion and in integral therewith and contains porosity which is discontinuous.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: August 22, 1978
    Assignee: General Electric Company
    Inventors: Frederic J. Klug, Wayne D. Pasco
  • Patent number: 4108676
    Abstract: Mixed oxide compounds La.sub.2 O.sub.3 . 11Al.sub.2 O.sub.3, NdAlO.sub.3 and nonstoichiometric MgAl.sub.2 O.sub.3 are suitable for making cores and molds for casting advanced superalloy materials such as NiTaC-13.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: August 22, 1978
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Frederic J. Klug
  • Patent number: 4097292
    Abstract: A ceramic article suitable for use in the casting of advanced superalloy materials has a structure of a predetermined porosity content and consists of either 3Y.sub.2 O.sub.3 .multidot. 5Al.sub.2 O.sub.3, Y.sub.2 O.sub.3 .multidot. Al.sub.2 O.sub.3 or 2Y.sub.2 O.sub.3 .multidot. Al.sub.2 O.sub.3 or two-phase mixtures of these single-phase materials.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: June 27, 1978
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Frederic J. Klug