Gaseous contaminate dosimeter and method
Patent 3985017 Issued on October 12, 1976. Estimated Expiration Date: 
October 12, 1993. 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.
October 12, 1993. 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 2234499 3481179 3607084 3681027 3924219 InventorAssigneeApplicationNo. 537908 filed on 01/02/1975US Classes:436/116, Oxides of nitrogen422/83, Means for analyzing gas sample436/121, Only hydrogen sulfide436/122, Sulfur dioxide436/126, Carbon containing compound (e.g., vinylchloride, etc.)436/134, Carbon monoxide only73/31.02ImpurityExaminersPrimary: Gill, James J.Assistant: Ciarlante, Anthony V. Attorney, Agent or FirmAbstractA gaseous contaminate personal dosimeter which comprises a container; an inert porous thin barrier element forming one side of the container, the barrier element adapted to permit the diffusion of the gaseous contaminates that are to be determined into the interior of the container; and a gaseous contaminate-collecting medium within the container and positioned opposite the barrier element to collect gaseous contaminate diffused from the ambient atmosphere through the barrier element; and means to inhibit convection movement of the diffused gases within the container, whereby the dosimeter permits the determination of gaseous contaminate in proportion to ambient concentrations independent of ambient convection patterns. |
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