1
Carl G Fehder: Carbon dioxide indicator device. March 1, 1988: US04728499 (72 worldwide citation)

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 fro ...


2
Carl G Fehder: Quantitative carbon dioxide detector. William E Pelton, February 19, 1991: US04994117 (57 worldwide citation)

A detector for rapid response, quantitative determination of carbon dioxide in a gas comprising one or more components, each of which comprises a carrier with a surface to be exposed to the gas, said surface including ane indicating element of a predetermined sensitivity which gives a rapid response ...


3
Carl G Fehder: Apparatus for determining whether respiratory gas is present in a gaseous sample. Nellcor Incorporated, William E Pelton, January 12, 1993: US05179002 (40 worldwide citation)

A method and apparatus are is disclosed for determining whether respiratory gas is present in a gaseous sample. The sample is brought into contact with an indicator which yields an indication within a diagnostically effective period of time of the presence in the sample of carbon dioxide in concentr ...


4
Carl G Fehder: Method for determining whether respiratory gas is present in a gaseous sample. Nellcor Incorporated, Cooper & Dunham, November 24, 1992: US05166075 (34 worldwide citation)

A method is disclosed for determining whether respiratory gas is present in a gaseous sample by which the sample is brought into contact with an indicator which yields an indication within a diagnostically effective period of time of the presence in the sample of carbon dioxide in concentration of a ...


5
Carl G Fehder: Indicator device. Carl G Fehder, LU XINHUA, February 24, 1988: CN87105619 (1 worldwide citation)

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 9 mounted within an enclosure 1 with a transparent window, said component comprising a carrier having fixedly attached thereto an indicating element forme ...


6
Carl G Fehder: Quantitative carbon dioxide detector. Carl G Fehder, QI ZENGDU, November 15, 1989: CN89103213

A carbon dioxide detector provides a rapid response for the quantitative determination of carbon dioxide in a gas. The detector includes one or more components including a surface to be exposed to the gas. Each surface contains an indicator element of a predetermined sensitivity which gives a rapid ...