Mercury-thallium-barium-calcium-strontium-copper-oxide 1223 superconductor and method of making same
Patent 5492885 Issued on February 20, 1996. Estimated Expiration Date: 
August 17, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 17, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for preparing superconducting films by radio-frequency-generated aerosol plasma deposition Oxide superconductors Method of fabricating thallium-containing ceramic superconductors Patent #: 5332721 InventorsAssigneeApplicationNo. 291454 filed on 08/17/1994US Classes:505/120, Thallium (Tl) containing252/519.15, Four diverse metals containing257/E39.01, Comprising copper oxide (EPO)423/594.14, Zinc, cadmium, or mercury containing (e.g., zincate, etc.)423/594.16, Alkaline earth metal containing (Mg, Ca, Sr, or Ba)501/123, Alkaline earth metal compound containing505/125, Copper (Cu) and oxygen (O) containing505/126, Containing three atoms of copper to between six and seven atoms of oxygen [e.g., YCu3O(7-@), LaCu3O(6+*), etc.]505/450, With melting505/492, Bismuth (Bi) or thallium (Tl) containing505/501, Bismuth (Bi) or thallium (Tl) containing505/739, Molding, coating, shaping, or casting of superconducting material505/742, Annealing505/783, Thallium(Tl)-(e.g., Tl2CaBaCu308)505/785, Composition containing superconducting material and diverse nonsuperconducting material505/822Shaping: (Classes 148, 264)ExaminersPrimary: McGinty, Douglas J.Attorney, Agent or FirmInternational ClassesH01L 039/12H01B 012/00 C04B 035/45 C04B 035/64 Foreign Application Priority Data1994-04-25 KRAbstractMercury-thallium based superconductors with the formula Hg1-x Tlx Ba2 (Ca1-y Sry)2 Cu3 O8+δ ; change "their preparing method, in particular characterized in that it" to and a method for preparing them. The new superconductors are prepared by reacting respective ternary oxides, such as Ba2 CuO3+x and Ca1-y Sry CuO2, to reduce the formation of an impure phase and by substituting thallium (Ti) a portion of the mercury (Hg) conventionally used in mercury-based superconductors of similar structure, in order to thermally stabilize the superconductor and provide it with a high critical current density characteristic.Other References
Field of SearchThallium (Tl) containingCopper (Cu) and oxygen (O) containing Containing three atoms of copper to between six and seven atoms of oxygen [e.g., YCu3O(7-@), LaCu3O(6+*), etc.] With melting Bismuth (Bi) or thallium (Tl) containing Molding, coating, shaping, or casting of superconducting material Thallium(Tl)-(e.g., Tl2CaBaCu308) Shaping: (Classes 148, 264) Composition containing superconducting material and diverse nonsuperconducting material Bismuth (Bi) or thallium (Tl) containing Annealing Alkaline earth metal compound containing |
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