Sensor element
Patent 4601883 Issued on July 22, 1986. Estimated Expiration Date: 
June 5, 2005. 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 5, 2005. 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 3900428 3901828 Gas-sensor element and method for detecting reducing gas or oxygen gas Metal oxide catalytic compositions having perovskite crystal structures and containing metals of the platinum group Method of manufacturing a gas sensor Oxygen sensor Patent #: 4314996 InventorsApplicationNo. 06/741209 filed on 06/05/1985US Classes:422/94, Combustible gas detector338/34, Gas, vapor, or moisture absorbing or collecting422/98, Analysis based on electrical measurement502/303, Lanthanum73/31.05Detector detailExaminersPrimary: Richman, Barry S.Assistant: Gzybowski, Michael S. International ClassG01N 27/12 (20060101)Foreign Application Priority Data1980-12-19 JPAbstractA sensor element comprising a substrate made of a compound oxide of the perovskite type, the compound oxide having the formula A1-x A'x B1-y B'y O3 in which A represents a trivalent element selected from the group consisting of La, Ce, Pr and Nd, A' represents a divalent element selected from the group consisting of Ca, Sr and Ba, B represents equal amounts of trivalent and tetravalent Co, B' represents a tetravalent element selected from the group consisting of Fe, Mn, V and Ti, x has a value ranging from (0.6) to (0.95) and y has a value ranging from (0.2) to (0.9) with the proviso that x must equal 1/2(1+y). |
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