Gas detecting apparatus
Patent 4638443 Issued on January 20, 1987. Estimated Expiration Date: 
February 21, 2004. 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.
February 21, 2004. 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 ReferencesGas sensing signaling system Self-compensating gas detection apparatus Gas detection device and method for detecting gas Gas detector Gas detector Selective gas detection and measurement system Patent #: 4542640 Inventors
AssigneeApplicationNo. 06/581667 filed on 02/21/1984US Classes:702/24, Gaseous mixture (e.g., solid-gas, liquid-gas, gas-gas)340/634, Semiconductor detector702/27, Molecular structure or composition determination73/31.05Detector detailExaminersPrimary: Gruber, Felix D.Attorney, Agent or FirmInternational ClassesG08B 17/117 (20060101)G08B 17/10 (20060101) G01N 33/00 (20060101) Foreign Application Priority Data1983-02-21 JPAbstractA gas detecting apparatus incorporates a number of gas detecting elements which react with a variety of gases and exhibit gas sensitivities differing from one another in dependence on the gas species. The detection patterns obtained by quantitizing the detection outputs of the gas detecting elements are compared with a plurality of standard patterns prepared previously for assumed combinations of gas species and concentrations thereof. On the basis of the standard pattern which is same or most similar to the detection pattern, the gas species is identified.Other References
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