Patents by Inventor Alexis P. Malozemoff
Alexis P. Malozemoff 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).
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Patent number: 9543496Abstract: A method comprising irradiating a polycrystalline rare earth metal-alkaline earth metal-transition metal-oxide superconductor layer with protons having an energy of 1 to 6 MeV. The irradiating process produces an irradiated layer that comprises randomly dispersed defects with an average diameter in the range of 1-10 nm.Type: GrantFiled: March 17, 2014Date of Patent: January 10, 2017Assignee: UChicago Argonne, LLCInventors: Ulrich Welp, Dean J. Miller, Wai-Kwong Kwok, Martin W. Rupich, Steven Fleshler, Alexis P. Malozemoff
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Publication number: 20150263259Abstract: A method comprising irradiating a polycrystalline rare earth metal-alkaline earth metal-transition metal-oxide superconductor layer with protons having an energy of 1 to 6 MeV. The irradiating process produces an irradiated layer that comprises randomly dispersed defects with an average diameter in the range of 1-10 nm.Type: ApplicationFiled: March 17, 2014Publication date: September 17, 2015Applicant: UChicago Argonne, LLCInventors: Ulrich Welp, Dean J. Miller, Wai-Kwong Kwok, Martin W. Rupich, Steven Fleshler, Alexis P. Malozemoff
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Patent number: 8886267Abstract: A cryogenically-cooled HTS cable is configured to be included within a utility power grid having a maximum fault current that would occur in the absence of the cryogenically-cooled HTS cable. The cryogenically-cooled HTS cable includes a continuous liquid cryogen coolant path for circulating a liquid cryogen. A continuously flexible arrangement of HTS wires has an impedance characteristic that attenuates the maximum fault current by at least 10%. The continuously flexible arrangement of HTS wires is configured to allow the cryogenically-cooled HTS cable to operate, during the occurrence of a maximum fault condition, with a maximum temperature rise within the HTS wires that is low enough to prevent the formation of gas bubbles within the liquid cryogen.Type: GrantFiled: November 22, 2010Date of Patent: November 11, 2014Assignee: American Superconductor CorporationInventors: Douglas C. Folts, James Maguire, Jie Yuan, Alexis P. Malozemoff
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Patent number: 8532725Abstract: A method of controlling fault currents within a utility power grid is provided. The method may include coupling a superconducting electrical path between a first and a second node within the utility power grid and coupling a non-superconducting electrical path between the first and second nodes within the utility power grid. The superconducting electrical path and the non-superconducting electrical path may be electrically connected in parallel. The superconducting electrical path may have a lower series impedance, when operated below a critical current level, than the non-superconducting electrical path. The superconducting electrical path may have a higher series impedance, when operated at or above the critical current level, than the non-superconductor electrical path.Type: GrantFiled: January 25, 2010Date of Patent: September 10, 2013Assignee: American Superconductor CorporationInventors: Douglas C. Folts, James Maguire, Jie Yuan, Alexis P. Malozemoff
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Publication number: 20110132631Abstract: A cryogenically-cooled HTS cable is configured to be included within a utility power grid having a maximum fault current that would occur in the absence of the cryogenically-cooled HTS cable. The cryogenically-cooled HTS cable includes a continuous liquid cryogen coolant path for circulating a liquid cryogen. A continuously flexible arrangement of HTS wires has an impedance characteristic that attenuates the maximum fault current by at least 10%. The continuously flexible arrangement of HTS wires is configured to allow the cryogenically-cooled HTS cable to operate, during the occurrence of a maximum fault condition, with a maximum temperature rise within the HTS wires that is low enough to prevent the formation of gas bubbles within the liquid cryogen.Type: ApplicationFiled: November 22, 2010Publication date: June 9, 2011Applicant: American Superconductor CorporationInventors: Douglas C. Folts, James Maguire, Jie Yuan, Alexis P. Malozemoff
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Patent number: 7902461Abstract: A cryogenically-cooled HTS cable is configured to be included within a utility power grid having a maximum fault current that would occur in the absence of the cryogenically-cooled HTS cable. The cryogenically-cooled HTS cable includes a continuous liquid cryogen coolant path for circulating a liquid cryogen. A continuously flexible arrangement of HTS wires has an impedance characteristic that attenuates the maximum fault current by at least 10%. The continuously flexible arrangement of HTS wires is configured to allow the cryogenically-cooled HTS cable to operate, during the occurrence of a maximum fault condition, with a maximum temperature rise within the HTS wires that is low enough to prevent the formation of gas bubbles within the liquid cryogen.Type: GrantFiled: March 20, 2007Date of Patent: March 8, 2011Assignee: American Superconductor CorporationInventors: Douglas C. Folts, James Maguire, Jie Yuan, Alexis P. Malozemoff
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Patent number: 7816303Abstract: A laminated superconductor wire includes a superconductor wire assembly, which includes a first superconductor insert comprising a first high temperature superconductor layer overlaying a first substrate and a second superconductor insert comprising a second high temperature superconductor layer overlaying a second substrate. The first and second superconductor inserts are joined together at their respective substrates. An electrically conductive structure substantially surrounds the superconductor wire assembly.Type: GrantFiled: July 29, 2005Date of Patent: October 19, 2010Assignee: American Superconductor CorporationInventors: Cornelis Leo Hans Thieme, Alexis P. Malozemoff, Martin W. Rupich, Urs-Detlev Schoop, Elliott D. Thompson, Darren Verebelyi
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Publication number: 20100149707Abstract: A method of controlling fault currents within a utility power grid is provided. The method may include coupling a superconducting electrical path between a first and a second node within the utility power grid and coupling a non-superconducting electrical path between the first and second nodes within the utility power grid. The superconducting electrical path and the non-superconducting electrical path may be electrically connected in parallel. The superconducting electrical path may have a lower series impedance, when operated below a critical current level, than the non-superconducting electrical path. The superconducting electrical path may have a higher series impedance, when operated at or above the critical current level, than the non-superconductor electrical path.Type: ApplicationFiled: January 25, 2010Publication date: June 17, 2010Inventors: Douglas C. Folts, James Maguire, Jie Yuan, Alexis P. Malozemoff
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Patent number: 7724482Abstract: A superconducting transformer system is configured to be included within a utility power grid having a known fault current level. The superconducting transformer system includes a non-superconducting transformer interconnected between a first node and a second node of the utility power grid. A superconducting transformer is interconnected between the first node and the second node of the utility power grid. The superconducting transformer and the non-superconducting transformer are electrically connected in parallel. The superconducting transformer has a lower series impedance than the non-superconducting transformer when the superconducting transformer is operated below a critical current level and a critical temperature. The superconducting transformer is configured to have a series impedance that is at least N times the series impedance of the non-superconducting transformer when the superconducting transformer is operated at or above one or more of the critical current level and the critical temperature.Type: GrantFiled: March 20, 2007Date of Patent: May 25, 2010Assignee: American Superconductor CorporationInventors: Douglas C. Folts, James Maguire, Jie Yuan, Alexis P. Malozemoff
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Patent number: 7674751Abstract: A method of making a laminated superconductor wire includes providing an assembly, where the assembly includes a substrate; a superconductor layer overlaying a surface of the substrate, the superconductor layer having a defined pattern; and a cap layer; and slitting the assembly in accordance with the defined pattern of the superconductor layer to form a sealed wire. Slitting the assembly in accordance with the defined pattern may form multiple sealed wires, and the substrate may be substantially wider than the sealed wires.Type: GrantFiled: July 21, 2006Date of Patent: March 9, 2010Assignee: American Superconductor CorporationInventors: Alexis P. Malozemoff, Martin W. Rupich, Douglas C. Folts
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Publication number: 20080190646Abstract: A superconducting electrical cable system is configured to be included within a utility power grid having a known fault current level. The superconducting electrical cable system includes a non-superconducting electrical path interconnected between a first node and a second node of the utility power grid. A superconducting electrical path is interconnected between the first node and the second node of the utility power grid. The superconducting electrical path and the non-superconducting electrical path are electrically connected in parallel, and the superconducting electrical path has a lower series impedance than the non-superconducting electrical path when the superconducting electrical path is operated below a critical current level and a critical temperature.Type: ApplicationFiled: March 20, 2007Publication date: August 14, 2008Inventors: DOUGLAS C. FOLTS, James Maguire, Jie Yuan, Alexis P. Malozemoff
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Publication number: 20080194411Abstract: A cryogenically-cooled HTS wire includes a stabilizer having a total thickness in a range of 200-600 micrometers and a resistivity in a range of 0.8-15.0 microOhm cm at approximately 90 K. A first HTS layer is thermally-coupled to at least a portion of the stabilizer.Type: ApplicationFiled: March 20, 2007Publication date: August 14, 2008Inventors: Douglas C. Folts, James MaGuire, Jie Yuan, Alexis P. Malozemoff
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Publication number: 20080190637Abstract: A cryogenically-cooled HTS cable is configured to be included within a utility power grid having a maximum fault current that would occur in the absence of the cryogenically-cooled HTS cable. The cryogenically-cooled HTS cable includes a continuous liquid cryogen coolant path for circulating a liquid cryogen. A continuously flexible arrangement of HTS wires has an impedance characteristic that attenuates the maximum fault current by at least 10%. The continuously flexible arrangement of HTS wires is configured to allow the cryogenically-cooled HTS cable to operate, during the occurrence of a maximum fault condition, with a maximum temperature rise within the HTS wires that is low enough to prevent the formation of gas bubbles within the liquid cryogen.Type: ApplicationFiled: March 20, 2007Publication date: August 14, 2008Inventors: DOUGLAS C. FOLTS, James Maguire, Jie Yuan, Alexis P. Malozemoff
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Publication number: 20080192392Abstract: A superconducting transformer system is configured to be included within a utility power grid having a known fault current level. The superconducting transformer system includes a non-superconducting transformer interconnected between a first node and a second node of the utility power grid. A superconducting transformer is interconnected between the first node and the second node of the utility power grid. The superconducting transformer and the non-superconducting transformer are electrically connected in parallel. The superconducting transformer has a lower series impedance than the non-superconducting transformer when the superconducting transformer is operated below a critical current level and a critical temperature. The superconducting transformer is configured to have a series impedance that is at least N times the series impedance of the non-superconducting transformer when the superconducting transformer is operated at or above one or more of the critical current level and the critical temperature.Type: ApplicationFiled: March 20, 2007Publication date: August 14, 2008Inventors: DOUGLAS C. FOLTS, JAMES MAGUIRE, JIE YUAN, ALEXIS P. MALOZEMOFF
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Publication number: 20080191561Abstract: A superconducting electrical cable system is configured to be included within a utility power grid. The superconducting electrical cable system includes a superconducting electrical path interconnected between a first and a second node within the utility power grid. A non-superconducting electrical path is interconnected between the first and second nodes within the utility power grid. The superconducting electrical path and the non-superconducting electrical path are electrically connected in parallel. The superconducting electrical path has a lower series impedance, when operated below a critical current level, than the non-superconducting electrical path. The superconducting electrical path has a higher series impedance, when operated at or above the critical current level, than the non-superconductor electrical path.Type: ApplicationFiled: February 9, 2007Publication date: August 14, 2008Inventors: DOUGLAS C. FOLTS, James Maguire, Jie Yuan, Alexis P. Malozemoff
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Patent number: 6436317Abstract: Oxide bronze compositions and articles manufactured in accordance therewith are provided. The oxide bronze compositions have the general formula AxBOy, in which A comprises an alkali, alkaline earth or rare earth metal and in which A has a valence, m, equal to 1, 2 or 3, B comprises a transition metal having a valence, n, less than or equal to 6,0<x<1 on an atomic ratio basis and y=[(x)(m)+n]/2. High temperature superconducting devices incorporating such compositions are also provided. The superconducting devices include a substrate having a polycrystalline superconducting layer or filament deposited on top of or embedded in the substrate. The superconducting layer or filament is formed of the oxide bronze composition. In some embodiments, the oxide bronze layer is textured with a full-width-half-maximum of a pole figure of less than or equal to 20 degrees.Type: GrantFiled: May 26, 2000Date of Patent: August 20, 2002Assignee: American Superconductor CorporationInventors: Alexis P. Malozemoff, Alexander Otto, Cornelis Leo Hans Thieme, Martin W. Rupich
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Patent number: 6393690Abstract: The invention provides a multifilamentary superconducting composite article comprising multiple substantially electrically decoupled domains, each including one or more fine, preferably twisted filaments of a desired superconducting oxide material. In a preferred embodiment, the article comprises a matrix, which substantially comprises a noble metal, a conductive jacketing layer surrounding the matrix, a plurality of discrete filament decoupling layers, each comprising an insulating material, disposed within the matrix to separate the matrix into a plurality of substantially electrically decoupled domains; a plurality of filaments, each comprising a desired superconducting oxide, which are disposed within and essentially encapsulated by the matrix and chemically isolated thereby from the decoupling layers, each of the electrically decoupled domains containing at least one filament.Type: GrantFiled: July 20, 1999Date of Patent: May 28, 2002Assignee: American Superconductor CorprationInventors: Gregory L. Snitchler, Gilbert N. Riley, Jr., Alexis P. Malozemoff, Craig J. Christopherson
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Patent number: 6284979Abstract: A cabled conductor is provided for use in a cryogenically cooled circuit including refrigeration having a predetermined operating temperature and efficiency. The conductor includes multiple conductor strands cabled about the longitudinal axis of the conductor at a preselected cabling period, each strand including a composite of superconducting ceramic in intimate contact with conductive matrix material. Each filament has high performance regions in which the filament material is well-textured with its preferred direction aligned perpendicular to the widest longitudinal cross-section of the conductor alternating with poorly superconducting regions which are at least about half the diameter of a filament in length and in which the superconducting ceramic filament is strained by transposition in excess of its critical strain limit. In the poorly superconducting regions, the conductive matrix material provides an alternate current path.Type: GrantFiled: May 5, 1997Date of Patent: September 4, 2001Assignee: American Superconductor CorporationInventors: Alexis P. Malozemoff, Gregory L. Snitchler, William L. Barnes, Alexander Otto, Gilbert N. Riley, Jr., Jeffrey M. Seuntjens
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Patent number: 6038462Abstract: A multifilamentary superconducting composite article comprising multiple substantially electrically decoupled domains, each including one or more fine, preferably twisted filaments of a desired superconducting oxide material. In a preferred embodiment, the article comprises a matrix, which substantially comprises a noble metal, a conductive jacketing layer surrounding the matrix, a plurality of discrete filament decoupling layers, each comprising an insulating material, disposed within the matrix to separate the matrix into a plurality of substantially electrically decoupled domains; a plurality of filaments, each comprising a desired superconducting oxide, which are disposed within and essentially encapsulated by the matrix and chemically isolated thereby from the decoupling layers, each of the electrically decoupled domains containing at least one filament.Type: GrantFiled: May 22, 1997Date of Patent: March 14, 2000Assignee: American Superconductor CorporationInventors: Gregory L. Snitchler, Gilbert N. Riley, Jr., Alexis P. Malozemoff, Craig J. Christopherson
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Patent number: 5581220Abstract: Double pancake coils include a pair of pancake coils of different dimensions, and are wound from the same continuous length of superconducting wire. The double pancake coils are coaxially positioned and electrically interconnected along a longitudinal axis to provide a multi-coil superconducting magnetic coil assembly. Each of the double pancakes has at least one of its pancake coils electrically connected to at least another pancake coil of an adjacent double pancake coil having substantially the same outer dimension. The electrical connections between adjacent pancake coils are provided with relatively straight or "unbent" segments of superconducting wire even though the inner and/or outer dimension profile of the superconducting magnetic coil assembly along its longitudinal axis varies.Type: GrantFiled: October 10, 1995Date of Patent: December 3, 1996Assignee: American Superconductor CorporationInventors: Anthony J. Rodenbush, Alexis P. Malozemoff, Bruce B. Gamble