Patents by Inventor Irvin C. Huseby

Irvin C. Huseby 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: 4897372
    Abstract: A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon A4F5F6F4 but excluding line F6F4 of FIG. 4, a porosity of less than about 10% by volume, and a thermal conductivity greater than 0.90 W/cm.K at 25.degree. C. which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, yttrium oxide, and free carbon, shaping said mixture into a compact, said mixture and said compact having a composition wherein the equivalent % of yttrium and aluminum ranges from point F5 up to point F4 of FIG. 4, said compact having an equivalent % composition of Y, Al, O and N outside the composition defined and encompassed by polygon A4F5F6F4 of FIG.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: January 30, 1990
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4818455
    Abstract: A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon ABCFGH of FIG. 2, a porosity of less than about 10% by volume, and a thermal conductivity greater than 0.70 W/cm.K at 25.degree. C. which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, gadolinium oxide, and free carbon, shaping said mixture into a compact, said mixture and compact having a composition wherein the equivalent % of gadolinium and aluminum ranges from point A to point F of FIG. 2, said mixture and said compact having an equivalent % composition of Gd, Al, O and N outside the composition defined and encompassed by polygon ABCFGH of FIG. 2, heating said compact to a temperature at which its pores remain open reacting said free carbon with oxygen contained in said aluminum nitride producing a deoxidized compact, said deoxidized compact having a composition wherein the equivalent % of Al, Gd, O and N is defined and encompassed by polygon ABCFGH of FIG.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: April 4, 1989
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4764321
    Abstract: A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon ABCDEFGH excluding line DE of FIG. 2, a porosity of less than about 10% by volume, and a thermal conductivity greater than 0.70 W/cm.multidot.K at 25.degree. C. which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, an Ln oxide selected from the group consisting essentially of erbium oxide, holmium oxide, a mixture and solid solution thereof, and free carbon, shaping said mixture into a compact, said mixture and compact having a composition wherein the equivalent % of Ln and aluminum ranges from point A up to point E of FIG. 2, said mixture and said compact having an equivalent % composition of Ln, Al, O and N outside the composition defined and encompassed by polygon ABCDEFGH of FIG.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: August 16, 1988
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4578234
    Abstract: A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon JKLM but not including line MJ of FIG. 4 and a thermal conductivity greater than 1.00 W/cm.multidot.K at 25.degree. C., preferably greater than 1.42 W/cm.multidot.K at 25.degree. C., which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, yttrium oxide, and free carbon, shaping said mixture into a compact, said mixture and said compact having a composition wherein the equivalent % of yttrium and aluminum ranges from point L to less than joint J of FIG. 4, said compact having an equivalent % composition of Y, Al, O and N outside the composition defined and encompassed by polygon JKLM of FIG.
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: March 25, 1986
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4578232
    Abstract: A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon LT1DM but not including lines LM and DM of FIG. 4, a porosity of less than about 10% by volume, and a thermal conductivity higher than 1.00 W/cm.multidot.K at 25.degree. C. which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, yttrium oxide, and free carbon, shaping said mixture into a compact, said mixture and said compact having a composition wherein the equivalent % of Yttrium and aluminum ranges from point T1 up to point M of FIG. 4, said compact having an equivalent % composition of Y, Al, O and N outside the composition defined and encompassed by polygon LT1DM of FIG.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: March 25, 1986
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4578364
    Abstract: A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon P1JFA4 but not including lines JF and A4F of FIG. 4, a porosity of less than about 10% by volume, and a thermal conductivity greater than 1.00 W/cm.multidot.K at 25.degree. C. which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, yttrium oxide, and free carbon, shaping said mixture into a compact, said mixture and said compact having a composition wherein the equivalent % of yttrium and aluminum ranges between points J and A4 of FIG. 4, said compact having an equivalent % composition of Y, Al, O and N outside the composition defined and encompassed by polgon P1JFA4 of FIG.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: March 25, 1986
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4578233
    Abstract: A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon FJDSR but not including line RF of FIG. 4, a porosity of less than about 10% by volume, and a thermal conductivity greater than 1.00 W/cm.multidot.K at 25.degree. C. which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, yttrium oxide, and free carbon, shaping said mixture into a compact, said mixture and said compact having a composition wherein the equivalent % of yttrium and aluminum ranges from point D up to point F of FIG. 4, said compact having an equivalent % composition of Y, Al, O and N outside the composition defined and encompassed by polygon FJDSR and FIG.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: March 25, 1986
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4578365
    Abstract: A process for producing an aluminum nitride ceramic body having a composition defined and encompassed by polygon P1N1KJ but not including lines KJ and P1J of FIG. 4, and a thermal conductivity greater than 1.00 W/cm.multidot.K at 25.degree. C. which comprises forming a mixture comprised of aluminum nitride powder containing oxygen, yttrium oxide, and free carbon, shaping said mixture into a compact, said mixture and said compact having a composition wherein the equivalent % of yttrium and aluminum ranges between points K and P1 of FIG. 4, said compact having an equivalent % composition of Y, Al, O and N outside the composition defined and encompassed by polygon P1N1KJ of FIG.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: March 25, 1986
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4547471
    Abstract: A process for producing a polycrystalline aluminum nitride ceramic body having a composition defined and encompassed by line ABCDEFA but not including lines CD and EF of FIG. 1, a porosity of less than about 10% by volume of said body and a thermal conductivity greater than 1.0 W/cm.multidot.K at 22.degree. C. which comprises forming a mixture comprised of aluminum nitride powder and an yttrium additive selected from the group consisting of yttrium, yttrium hydride, yttrium nitride and mixtures thereof, said aluminum nitride and yttrium additive having a predetermined oxygen content, said mixture having a composition wherein the equivalent % of yttrium, aluminum, nitrogen and oxygen is defined and encompassed by line ABCDEFA but not including lines CD and EF in FIG. 1, shaping said mixture into a compact and sintering said compact at a temperature ranging from about 1850.degree. C. to about 2170.degree. C.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: October 15, 1985
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4533645
    Abstract: The process comprises forming a mixture comprised of aluminum nitride powder and free carbon wherein the aluminum nitride has a predetermined oxygen content higher than about 0.8% by weight and wherein the amount of free carbon reacts with such oxygen content to produce a deoxidized powder or compact having an oxygen content ranging from greater than about 0.35% by weight to about 1.1% by weight and which is at least 20% by weight lower than the predetermined oxygen content, heating the mixture or a compact thereof to react the carbon and oxygen producing the deoxidized aluminum nitride, and sintering a compact of the deoxidized aluminum nitride producing a ceramic body having a density greater than 85% of theoretical and a thermal conductivity greater than 0.5 W/cm.multidot.K. at 22.degree. C.
    Type: Grant
    Filed: July 11, 1984
    Date of Patent: August 6, 1985
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4511773
    Abstract: A ceramic useful as an electrically insulating material is produced by calcinating wollastonite powder, admixing the calcined powder with phosphoric acid of certain P.sub.2 O.sub.5 concentration range, die-pressing the resulting mixture, and firing the resulting pressed piece. The ceramic is employed within arc circuit breakers as a substitute for asbestos liners, dividers and arc splitters.
    Type: Grant
    Filed: August 3, 1983
    Date of Patent: April 16, 1985
    Assignee: General Electric Company
    Inventors: Eldon B. Heft, Irvin C. Huseby, Jan W. Szymaszek
  • Patent number: 4478785
    Abstract: The process comprises forming a mixture comprised of aluminum nitride powder and free carbon wherein the aluminum nitride has a predetermined oxygen content higher than about 0.8% by weight and wherein the amount of free carbon reacts with such oxygen content to produce a deoxidized powder or compact having an oxygen content ranging from greater than about 0.35% by weight to about 1.1% by weight and which is at least 20% by weight lower than the predetermined oxygen content, heating the mixture or a compact thereof to react the carbon and oxygen producing the deoxidized aluminum nitride, and sintering a compact of the deoxidized aluminum nitride producing a ceramic body having a density greater than 85% of theoretical and a thermal conductivity greater than 0.5 W/cm.K at 22.degree. C.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: October 23, 1984
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Carl F. Bobik
  • Patent number: 4413062
    Abstract: A ceramic useful as an electrically insulating material is produced by calcining wollastonite powder, admixing the calcined powder with phosphoric acid of certain P.sub.2 O.sub.5 concentration range, die-pressing the resulting mixture, and firing the resulting pressed piece.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: November 1, 1983
    Assignee: General Electric Company
    Inventors: Irvin C. Huseby, Jan W. Szymaszek, Eldon B. Heft
  • Patent number: 4240828
    Abstract: A method for minimizing the formation of a reaction layer at the metal-ceramic interface comprises doping a superalloy material with the rare earth metal whose metal cation is in the ceramic material comprising the mold and/or core used in casting and directionally solidifying the superalloy material.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: December 23, 1980
    Assignee: General Electric Company
    Inventor: Irvin C. Huseby
  • 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: 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: 4162918
    Abstract: Less than 3 weight percent of a rare earth metal is employed in doping a directionally solidified eutectic alloy or a superalloy material to minimize the formation of a metal-ceramic reaction layer during casting and solidification thereof.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: July 31, 1979
    Assignee: General Electric Company
    Inventor: Irvin C. Huseby
  • 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: 4119437
    Abstract: A weakly acid solution of either NH.sub.4 NO.sub.3, NH.sub.4 Cl, NH.sub.4 HSO.sub.4, CH.sub.3 COOH or equimolar CH.sub.3 COOH -- CH.sub.3 COONa is employed to remove cores of either Y.sub.2 O.sub.3 or Sm.sub.2 O.sub.3 from castings of advanced superalloy materials. A molten salt bath may be used thereafter to remove reaction products formed by the reaction of the materials of the core and the metal casting.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: October 10, 1978
    Assignee: General Electric Company
    Inventors: Ronald H. Arendt, Irvin C. Huseby, Marcus P. Borom
  • 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