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Matthew L Smith, Steven J Fondriest: Electrochemical gas sensor. The Yellow Springs Instrument Company, Biebel & French, June 8, 1993: US05217595 (267 worldwide citation)

An electrochemical sensor for sensing a gas dissolved in a liquid. The sensor includes a probe having a cylindrical body and a rounded face. A working electrode, a reference electrode and an auxiliary electrode are buried in the probe body and have distal ends reaching conformingly to the face. A pu ...


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James R Mault, Edwin M Pearce Jr, Theodore W Barber, Craig M Lawrence, Timothy J Prachar, Jeffrey C Weintraub, Kevin S Nason: Method of respiratory gas analysis using a metabolic calorimeter. HealtheTech, Cooley Godward, May 31, 2005: US06899684 (176 worldwide citation)

A method of determining a respiratory parameter for a subject using an indirect calorimeter is provided. The indirect calorimeter includes a respiratory connector for passing inhaled and exhaled gases, a flow pathway operable to receive and pass inhaled and exhaled gases having a flow tube within th ...


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David B Lura: Gas sensor. Aequitron Medical, Palmatier Sjoquist & Helget, October 4, 1994: US05351522 (146 worldwide citation)

The invention relates to an oxygen sensor which measures the concentration of oxygen based upon ultrasonic sound waves traveling through a binary gas. The measured sound-wave delay through the gases determines the concentration level for oxygen within the transducer chamber. The invention includes a ...


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Lauren L Bowler, John E Lahiff: Fuel control system with calibration learning capability for motor vehicle internal combustion engine. General Motors Corporation, Howard N Conkey, December 19, 1978: US04130095 (140 worldwide citation)

A memory type fuel control system and method of operating a motor vehicle internal combustion engine having a three-way catalytic converter. A fuel flow control system provides a fuel supply rate near the air/fuel ratio at which the catalytic converter has maximum three-way conversion efficiency. Th ...


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Paul S Tamura: Electrochemical sensor with temperature compensation means. McNeilab, Audley A Ciamporcero Jr, July 6, 1982: US04338174 (138 worldwide citation)

A disposable gas sensor, such as for monitoring pO.sub.2 in blood or administered gases, includes a housing, a passageway therein for blood or gas, a membrane-anode-cathode polarographic assembly, and a temperature sensing element. The temperature sensing element penetrates the housing and includes ...


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Mutuo Tanaka: Remote monitoring unit. Andrus Sceales Starke & Sawall, January 17, 1995: US05382943 (123 worldwide citation)

A remote monitoring apparatus includes a camera for producing a video signal from a picture of a remote site location being monitored, an image processor for outputting an image signal through an image processing process for the video signal, a microphone for producing a sound signal from a sound at ...


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Masao Yafuso, John K Suzuki: Gas sensor. Cardiovascular Devices, Frank J Uxa Jr, Gordon L Peterson, April 25, 1989: US04824789 (120 worldwide citation)

A gas sensor has a first aqueous phase. The aqueous phase is composed of a soluble dye in a buffer. One or more additional agent can be further added to the aqueous phase as for instance an emulisification enhancement agent. The aqueous phase is homogenized into a polymeric precursor forming a emuls ...


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Mehdi Matthew Jafari: System and method for estimating oxygen concentration in a mixed gas experiencing pressure fluctuations. Nellcor Puritan Bennett, Baker Botts L, December 2, 2008: US07460959 (114 worldwide citation)

A method for estimating the concentration of a particular gas in a gas mixture having a fluctuating pressure is provided. A sensor output signal indicating the concentration of a particular gas in the gas mixture is received from a gas sensor. The received sensor output signal may vary over time due ...


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Carlo E Cuomo, Alfred Kutschker, Peter M Noble, Robert L Novack: Electrochemical gas sensor with wraparound reference electrode. Bacharach, Webb Burden Ziesenheim & Webb, February 8, 1994: US05284566 (106 worldwide citation)

An electrochemical sensor for detecting gas includes stacked reference, counter and sensing electrodes within a body and having a quantity of a liquid electrolyte in an electrolyte chamber therein. A support is provided for holding the electrodes and mats in contact with each other and at an inner e ...