04728499 is referenced by 72 patents and cites 16 patents.

A rapid response device for the detection of carbon dioxide in a concentration of more than 2% in a gas mixture comprising an indicator component mounted within an enclosure with a transparent window, the component comprising a carrier having fixedly attached thereto an indicating element formed from an aqueous solution of a colorless Lewis base, a hygroscropic, high boiling, transparent, colorless, water-miscible liquid and a pH-sensitive indicator, the enclosure being sealed for storage under a carbon-dioxide free atmosphere; and a method for determining the correct placement of an endotracheal catheter using the device.

Carbon dioxide indicator device
Application Number
Publication Number
Application Date
August 13, 1986
Publication Date
March 1, 1988
Carl G Fehder
11 Millhouse La., Cherry Hill, 08003
G01N 33/52
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