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
Andras Cedeon: Indicator device. Mincor, Browdy and Neimark, August 20, 2002: US06436347 (15 worldwide citation)

A fast-response colorimetric carbon dioxide indicator device which is substantially insensitive to humidity and comprises a chemically inert substrate and an indicator composition supported by the substrate and responsive to exposure to carbon dioxide in expired respiratory air to undergo a color ch ...


3
Gedeon Andras: Indicator device. Mincor, November 14, 2001: EP1153294-A1 (10 worldwide citation)

A fast-response colorimetric carbon dioxide indicator device which is substantially insensitive to humidity and comprises a chemically inert substrate and an indicator composition supported by the substrate and responsive to exposure to carbon dioxide in expired respiratory air to undergo a colour c ...


4
Erik Smyth, Graham Alexander Skinner, Deborah Allan: Indicator device. INSIGNIA TECHNOLOGIES, Benesch Friedlander Coplan & Aronoff, October 23, 2018: US10107760

There is described an indicator device for detecting a change in atmospheric conditions, the indicator device comprising an indicator section and a barrier section adjacent thereto, said indicator section comprising: an indicator material; a substrate material; and a first adhesive layer; the indica ...


5
Gedeon Andras: Indicator device. Mincor, Gedeon Andras, DR LUDWIG BRANN PATENTBYRĂ…, July 27, 2000: WO/2000/043778

A fast-response colorimetric carbon dioxide indicator device which is substantially insensitive to humidity and comprises a chemically inert substrate and an indicator composition supported by the substrate and responsive to exposure to carbon dioxide in expired respiratory air to undergo a colour c ...