Patents by Inventor Edward J. Siegal
Edward J. Siegal 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: 8354136Abstract: A method for producing a thick film includes disposing a precursor solution onto a substrate to form a precursor film. The precursor solution contains precursor components to a rare-earth/alkaline-earth-metal/transition-metal oxide including a salt of a rare earth element, a salt of an alkaline earth metal, and a salt of a transition metal in one or more solvents, wherein at least one of the salts is a fluoride-containing salt, and wherein the ratio of the transition metal to the alkaline earth metal is greater than 1.5. The precursor solution is treated to form a rare earth-alkaline earth-metal transition metal oxide superconductor film having a thickness greater than 0.8 ?m. precursor solution.Type: GrantFiled: November 24, 2009Date of Patent: January 15, 2013Assignee: American Superconductor CorporationInventors: Xiaoping Li, Thomas Kodenkandath, Edward J. Siegal, Wei Zhang, Martin W. Rupich, Yibing Huang
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Patent number: 7781376Abstract: A superconducting wire includes first and second superconducting layers disposed on one or more substrates in stacked relationship, the first superconducting layer comprising a high temperature superconducting oxide of a first composition and the second superconducting layer comprising a high temperature superconducting layer of a second composition, wherein the first and second compositions are different. The first superconductor layer optionally includes a high temperature superconductor composition selected to provide enhanced critical current (Ic(c)) in the presence of magnetic fields perpendicular to surface of the superconducting layer (H//c). The second superconductor layer optionally includes a high temperature superconductor composition selected to provide enhanced critical current (Ic) in the presence of magnetic fields parallel to surface of the superconducting layer (H//ab).Type: GrantFiled: July 28, 2006Date of Patent: August 24, 2010Assignee: American Superconductor CorporationInventors: Thomas Kodenkandath, Wei Zhang, Yibing Huang, Xiaoping Li, Edward J. Siegal, Martin W. Rupich
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Publication number: 20100112192Abstract: A method for producing a thick film includes disposing a precursor solution onto a substrate to form a precursor film. The precursor solution contains precursor components to a rare-earth/alkaline-earth-metal/transition-metal oxide including a salt of a rare earth element, a salt of an alkaline earth metal, and a salt of a transition metal in one or more solvents, wherein at least one of the salts is a fluoride-containing salt, and wherein the ratio of the transition metal to the alkaline earth metal is greater than 1.5. The precursor solution is treated to form a rare earth-alkaline earth-metal transition metal oxide superconductor film having a thickness greater than 0.8 ?m. precursor solution.Type: ApplicationFiled: November 24, 2009Publication date: May 6, 2010Applicant: American Superconductor Corp.Inventors: Xiaoping Li, Thomas Kodenkandath, Edward J. Siegal, Wei Zhang, Martin W. Rupich, Yibing Huang
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Patent number: 7622424Abstract: A method for producing a thick film includes disposing a precursor solution onto a substrate to form a precursor film. The precursor solution contains precursor components to a rare-earth/alkaline-earth-metal/transition-metal oxide including a salt of a rare earth element, a salt of an alkaline earth metal, and a salt of a transition metal in one or more solvents, wherein at least one of the salts is a fluoride-containing salt, and wherein the ratio of the transition metal to the alkaline earth metal is greater than 1.5. The precursor solution is treated to form a rare earth-alkaline earth-metal transition metal oxide superconductor film having a thickness greater than 0.8 ?m. precursor solution.Type: GrantFiled: September 30, 2005Date of Patent: November 24, 2009Assignee: American Superconductor CorporationInventors: Xiaoping Li, Thomas Kodenkandath, Edward J. Siegal, Wei Zhang, Martin W. Rupich, Yibing Huang
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Patent number: 6974501Abstract: The invention relates to multi-layer articles and methods of making such articles. The methods include first conditioning the surface of an underlying layer, such as a buffer layer or a superconductor layer, then disposing a layer of material on the conditioned surface. The conditioned surface can be a high quality surface. Superconductor articles formed by these methods can exhibit relatively high critical current densities.Type: GrantFiled: July 14, 2000Date of Patent: December 13, 2005Assignee: American Superconductor CorporationInventors: Wei Zhang, Martin W. Rupich, Suresh Annavarapu, Leslie G. Fritzemeier, Edward J. Siegal, Valery Prunier, Qi Li
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Patent number: 6730410Abstract: Methods and articles for controlling the surface of an alloy substrate for deposition of an epitaxial layer. The invention includes the use of an intermediate layer to stabilize the substrate surface against oxidation for subsequent deposition of an epitaxial layer.Type: GrantFiled: July 14, 2000Date of Patent: May 4, 2004Assignees: Electronic Power Research Institute, Incorporated, The Regents of the University of CaliforniaInventors: Leslie G. Fritzemeier, Qi Li, Martin W. Rupich, Elliott D. Thompson, Edward J. Siegal, Cornelis Leo Hans Thieme, Suresh Annavarapu, Paul N. Arendt, Stephen R. Foltyn
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Patent number: 6669774Abstract: The invention relates to methods and compositions for making a multi-layer article. The compositions can be used in relatively fast methods which can superconductor material intermediates that have relatively few cracks and/or blisters. The compositions can have relatively low water contents.Type: GrantFiled: July 14, 2000Date of Patent: December 30, 2003Assignee: American Superconductor CorporationInventors: Wei Zhang, Edward J. Siegal, Martin W. Rupich, Qi Li
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Patent number: 6537689Abstract: The invention relates to multi-layer articles and methods of making such articles. The multi-layer superconductors can have one or more layers with an oriented termination plane. The methods include first conditioning the termination plane of an underlying layer, such as a buffer layer or a superconductor layer, then disposing a layer of material on the conditioned termination plane. The conditioned termination plane can be a high quality termination plane. Superconductor articles formed by these methods can exhibit relatively high critical current densities.Type: GrantFiled: November 26, 2001Date of Patent: March 25, 2003Assignee: American Superconductor CorporationInventors: Urs-Detlev Schoop, Suresh Annavarapu, Martin W. Rupich, Xiaoping Li, Wei Zhang, Edward J. Siegal, Qi Li
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Patent number: 6458223Abstract: An alloy that contains at least two metals and can be used as a substrate for a superconductor is disclosed. The alloy can contain an oxide former. The alloy can have a biaxial or cube texture. The substrate can be used in a multilayer superconductor, which can further include one or more buffer layers disposed between the substrate and the superconductor material. The alloys can be made a by process that involves first rolling the alloy then annealing the alloy. A relatively large volume percentage of the alloy can be formed of grains having a biaxial or cube texture.Type: GrantFiled: March 31, 1999Date of Patent: October 1, 2002Assignee: American Superconductor CorporationInventors: Cornelis Leo Hans Thieme, Elliott D. Thompson, Leslie G. Fritzemeier, Robert D. Cameron, Edward J. Siegal
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Patent number: 6428635Abstract: An alloy capable of forming a (100) [001] cube-texture by thermo-mechanical techniques has 5 to 45 atomic percent nickel with the balance being copper. The alloy is useful as a conductive substrate for superconducting composites where the substrate is coated with a superconducting oxide. A buffer layer can optionally be coated on the substrate to enhance deposition of the superconducting oxide. Methods for producing the alloys, substrates, and superconductors are included.Type: GrantFiled: October 1, 1997Date of Patent: August 6, 2002Assignees: American Superconductor Corporation, The Regents of the University of CaliforniaInventors: Leslie G. Fritzemeier, Elliott D. Thompson, Edward J. Siegal, Cornelis Leo Hans Thieme, Robert D. Cameron, James L. Smith, W. Larry Hults
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Publication number: 20020082171Abstract: The invention relates to multi-layer articles and methods of making such articles. The multi-layer superconductors can have one or more layers with an oriented termination plane. The methods include first conditioning the termination plane of an underlying layer, such as a buffer layer or a superconductor layer, then disposing a layer of material on the conditioned termination plane. The conditioned termination plane can be a high quality termination plane. Superconductor articles formed by these methods can exhibit relatively high critical current densities.Type: ApplicationFiled: November 26, 2001Publication date: June 27, 2002Inventors: Urs-Detlev Schoop, Suresh Annavarapu, Martin W. Rupich, Xioping Li, Wei Zhang, Edward J. Siegal, Qi Li