Ruthenium-containing perovskite materials, catalysts and methods
Patent 5318937 Issued on June 7, 1994. Estimated Expiration Date: 
June 17, 2011. 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.
June 17, 2011. 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 References 3819536 3835069 3897367 3900428 3901828 3905918 3907968 Catalyst preparation Metal oxide catalytic compositions having perovskite crystal structures and containing metals of the platinum group Metal oxide catalytic compositions InventorsAssigneeApplicationNo. 717782 filed on 06/17/1991US Classes:502/303, Lanthanum423/596, And alkali metal, alkaline earth metal, or ammonium containing502/178, Silicon carbide502/250, Of Group II (i.e., alkaline earth, Be, Mg, Zn, Cd or Hg)502/525PEROVSKITEExaminersPrimary: Konopka, P. E.Assistant: McGinty, Douglas J. Attorney, Agent or FirmForeign Patent References
International ClassesB01J 023/10B01J 023/58 B01J 037/03 C01F 011/04 Foreign Application Priority Data1990-06-21 YUAbstractPerovskite materials have a composition of the formula La1-x Srx Cr1-y Ruy O3 wherein 0.1ࣘxࣘ0.5 and 0.01ࣘyࣘ0.10. The materials are used in catalysts for carbon monoxide oxidation, unsaturated hydrocarbon oxidation and/or nitrogen oxide reduction. |
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