Patents by Inventor Amit Goyal

Amit Goyal 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).

  • Publication number: 20040250651
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Application
    Filed: August 30, 2002
    Publication date: December 16, 2004
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Publication number: 20040205191
    Abstract: One embodiment of the present invention provides a system that facilitates initiating a communication session with a computing device. The system operates by first detecting the presence of the computing device through a first communication channel, and then initiating a communication session between the computing device and a server through the second communication channel. Next, the system transfers the state of an existing communication session between the server and a client to the computing device through the second communication channel, so that the computing device can take over the existing communication session with the server in place of the client.
    Type: Application
    Filed: March 11, 2003
    Publication date: October 14, 2004
    Inventors: Randall B. Smith, Kristen A. McIntyre, Amit Goyal, Jean-Paul Rene Wagner
  • Patent number: 6797030
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: September 28, 2004
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Patent number: 6790253
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: September 14, 2004
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Patent number: 6784139
    Abstract: The present invention relates to epitaxial, electrically conducting and mechanically robust, cubic nitride buffer layers deposited epitaxially on biaxially textured substrates such as metal and alloys. The invention comprises of a biaxially textured substrate with epitaxial layers of nitrides. The invention also discloses a method to form such epitaxial layers using a high rate deposition method as well as without the use of forming gases. The invention further comprises epitaxial layers of oxides on the biaxially textured nitride layers. In some embodiments the article further comprises electromagnetic devices which may be super conducting properties.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: August 31, 2004
    Assignees: Applied Thin Films, Inc., UT-Battelle, LLC
    Inventors: Sambasivan Sankar, Amit Goyal, Scott A. Barnett, Ilwon Kim, Donald M. Kroeger
  • Patent number: 6764770
    Abstract: Materials for depositing buffer layers on biaxially textured and untextured metallic and metal oxide substrates for use in the manufacture of superconducting and other electronic articles comprise RMnO3, R1−xAxMnO3, and combinations thereof; wherein R includes an element selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y, and A includes an element selected from the group consisting of Be, Mg, Ca, Sr, Ba, and Ra.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: July 20, 2004
    Assignee: UT-Battelle, LLC
    Inventors: Mariappan P. Paranthaman, Tolga Aytug, David K. Christen, Roeland Feenstra, Amit Goyal
  • Publication number: 20040121191
    Abstract: Materials for depositing buffer layers on biaxially textured and untextured metallic and metal oxide substrates for use in the manufacture of superconducting and other electronic articles comprise RMnO3, R1−xAxMnO3, and combinations thereof; wherein R includes an element selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu, and Y, and A includes an element selected from the group consisting of Be, Mg, Ca, Sr, Ba, and Ra.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 24, 2004
    Inventors: Mariappan P. Paranthaman, Tolga Aytug, David K. Christen, Roeland Feenstra, Amit Goyal
  • Patent number: 6740421
    Abstract: A method of preparing a biaxially textured article includes the steps of: rolling a metal preform while applying shear force thereto to form as-rolled biaxially textured substrate having an a rotated cube texture wherein a (100) cube face thereof is parallel to a surface of said substrate, and wherein a [100] direction thereof is at an angle of at least 30° relative to the rolling direction; and depositing onto the surface of the biaxially textured substrate at least one epitaxial layer of another material to form a biaxially textured article.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: May 25, 2004
    Assignee: UT-Battelle, LLC
    Inventor: Amit Goyal
  • Patent number: 6716795
    Abstract: The invention relates to an article with an improved buffer layer architecture comprising a substrate having a metal surface, and an epitaxial buffer layer on the surface of the substrate. The epitaxial buffer layer comprises at least one of the group consisting of ZrO2, HfO2, and compounds having at least one of Ca and a rare earth element stabilizing cubic phases of ZrO2 and/or HfO2. The article can also include a superconducting layer deposited on the epitaxial buffer layer. The article can also include an epitaxial capping layer between the epitaxial buffer layer and the superconducting layer. A method for preparing an epitaxial article comprises providing a substrate with a metal surface, depositing on the metal surface an epitaxial buffer layer comprising at least one material selected from the group consisting of ZrO2, HfO2, and compounds having at least one of Ca and a rare earth element stabilizing cubic phases of at least one of ZrO2 and HfO2.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: April 6, 2004
    Assignee: UT-Battelle, LLC
    Inventors: David P. Norton, Chan Park, Amit Goyal
  • Publication number: 20040003768
    Abstract: A method for forming a sharply biaxially textured substrate, such as a single crystal substrate, includes the steps of providing a deformed metal substrate, followed by heating above the secondary recrystallization temperature of the deformed substrate, and controlling the secondary recrystallization texture by either using thermal gradients and/or seeding. The seed is selected to shave a stable texture below a predetermined temperature. The sharply biaxially textured substrate can be formed as a tape having a length of 1 km, or more. Epitaxial articles can be formed from the tapes to include an epitaxial electromagnetically active layer. The electromagnetically active layer can be a superconducting layer.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 8, 2004
    Inventor: Amit Goyal
  • Patent number: 6670308
    Abstract: An epitaxial article and method for forming the same includes a substrate having a textured surface, and an electrochemically deposited substantially single orientation epitaxial layer disposed on and in contact with the textured surface. The epitaxial article can include an electromagnetically active layer and an epitaxial buffer layer. The electromagnetically active layer and epitaxial buffer layer can also be deposited electrochemically.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: December 30, 2003
    Assignee: UT-Battelle, LLC
    Inventor: Amit Goyal
  • Patent number: 6663976
    Abstract: A laminate article comprises a substrate and a biaxially textured (RE1xRE2(1−x))2O3 buffer layer over the substrate, wherein 0<x<1 and RE1 and RE2 are each selected from the group consisting of Nd, Sm, Eu, Ho, Er, Lu, Gd, Tb, Dy, Tm, and Yb. The (RE1xRE2(1−x))2O3 buffer layer can be deposited using sol-gel or metal-organic decomposition. The laminate article can include a layer of YBCO over the (RE1xRE2(1−x))2O3 buffer layer. A layer of CeO2 between the YBCO layer and the (RE1xRE2(1−x))2O3 buffer can also be include. Further included can be a layer of YSZ between the CeO2 layer and the (R1xRE2(1−x))2O3 buffer layer. The substrate can be a biaxially textured metal, such as nickel. A method of forming the laminate article is also disclosed.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: December 16, 2003
    Assignee: UT-Battelle, LLC
    Inventors: David B. Beach, Jonathan S. Morrell, Mariappan Paranthaman, Thomas Chirayil, Eliot D. Specht, Amit Goyal
  • Patent number: 6645313
    Abstract: A method for forming an electronically active biaxially textured article includes the steps of providing a substrate having a single crystal metal or metal alloy surface, deforming the substrate to form an elongated substrate surface having biaxial texture and depositing an epitaxial electronically active layer on the biaxially textured surface. The method can include at least one annealing step after the deforming step to produce the biaxially textured substrate surface. The invention can be used to form improved biaxially textured articles, such as superconducting wire and tape articles having improved Jc values.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: November 11, 2003
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Donald M. Kroeger
  • Patent number: 6635097
    Abstract: A strengthened, biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed, compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: Ni, Ag, Ag—Cu, Ag—Pd, Ni—Cu, Ni—V, Ni—Mo, Ni—Al, Ni—Cr—Al, Ni—W—Al, Ni—V—Al, Ni—Mo—Al, Ni—Cu—Al; and at least one fine metal oxide powder; the article having a grain size which is fine and homogeneous; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: October 21, 2003
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Publication number: 20030178102
    Abstract: An epitaxial article and method for forming the same includes a substrate having a textured surface, and an electrochemically deposited substantially single orientation epitaxial layer disposed on and in contact with the textured surface. The epitaxial article can include an electromagnetically active layer and an epitaxial buffer layer. The electromagnetically active layer and epitaxial buffer layer can also be deposited electrochemically.
    Type: Application
    Filed: March 19, 2002
    Publication date: September 25, 2003
    Inventor: Amit Goyal
  • Publication number: 20030162667
    Abstract: A method for forming an electronically active biaxially textured article includes the steps of providing a substrate having a single crystal metal or metal alloy surface, deforming the substrate to form an elongated substrate surface having biaxial texture and depositing an epitaxial electronically active layer on the biaxially textured surface. The method can include at least one annealing step after the deforming step to produce the biaxially textured substrate surface. The invention can be used to form improved biaxially textured articles, such as superconducting wire and tape articles having improved JC values.
    Type: Application
    Filed: February 22, 2002
    Publication date: August 28, 2003
    Inventors: Amit Goyal, Donald M. Kroeger
  • Patent number: 6610414
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: August 26, 2003
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Patent number: 6610413
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: August 26, 2003
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Patent number: 6607838
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: August 19, 2003
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Patent number: 6607839
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: August 19, 2003
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger