Gas analyzer and gas analyzing method

Details Gas analyzer and gas analyzing method Gas analyzer and gas analyzing method

2007-08-23

2011-12-27

Lyons, Michael A (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

C250S428000, C250S343000, C250S338500, C356S433000, C356S440000

Reexamination Certificate

active

08085404

ABSTRACT:
A gas analyzer capable of measuring a concentration of a gas component in gas at sensor units provided at a plurality of positions in real time by decreasing the number of signals input from the sensor units to an analyzer so as to reduce a data amount input to the analyzer and a gas analyzing method. The gas analyzing method includes the steps of: demultiplexing laser light by a demultiplexer into measurement laser light and reference laser light; letting the measurement laser light pass through gas to be received by a photoreceiver; finding an absorption spectrum absorbed by a gas component in the gas based on a light intensity of the received measurement laser light and of the reference laser light; and analyzing the absorption spectrum to measure a concentration of the gas component.

REFERENCES:
patent: 3207026 (1965-09-01), Churchill et al.
patent: 3958122 (1976-05-01), Jowett et al.
patent: 4432649 (1984-02-01), Krause
patent: 5060505 (1991-10-01), Tury et al.
patent: 5096834 (1992-03-01), Saito
patent: 5173749 (1992-12-01), Tell et al.
patent: 5185645 (1993-02-01), Sartorius et al.
patent: 5275553 (1994-01-01), Frish et al.
patent: 5381010 (1995-01-01), Gordon
patent: 5572031 (1996-11-01), Cooper et al.
patent: 5585636 (1996-12-01), Dollansky
patent: 6107631 (2000-08-01), He
patent: 6150661 (2000-11-01), McCaul et al.
patent: 6154284 (2000-11-01), McAndrew et al.
patent: 6496258 (2002-12-01), Leipertz et al.
patent: 6542831 (2003-04-01), Moosmuller et al.
patent: 6674528 (2004-01-01), Adachi et al.
patent: 6809825 (2004-10-01), Kaufmann
patent: 7041153 (2006-05-01), Totoki
patent: 7365352 (2008-04-01), Muta et al.
patent: 7650780 (2010-01-01), Hall
patent: 2003/0160174 (2003-08-01), Grant et al.
patent: 2004/0064243 (2004-04-01), Nakamura
patent: 2004/0237505 (2004-12-01), Leipertz
patent: 2006/0256330 (2006-11-01), Leipertz
patent: 2009/0039284 (2009-02-01), Goto et al.
patent: 2009/0095918 (2009-04-01), Iwase et al.
patent: 2009/0164138 (2009-06-01), Goto et al.
patent: 2009/0229250 (2009-09-01), Yamakage et al.
patent: 199 04 691 (2000-09-01), None
patent: 101 50 970 (2003-04-01), None
patent: 103 09 604 (2004-09-01), None
patent: 0 768 521 (1997-04-01), None
patent: 1 398 617 (2004-03-01), None
patent: A-55-83839 (1980-06-01), None
patent: B2-64-1740 (1989-01-01), None
patent: A-3-25352 (1991-02-01), None
patent: A-3-31726 (1991-02-01), None
patent: A-3-107744 (1991-05-01), None
patent: A-3-505131 (1991-11-01), None
patent: A-4-16749 (1992-01-01), None
patent: A-4-27846 (1992-01-01), None
patent: B2-5-77023 (1993-10-01), None
patent: A-6-148072 (1994-05-01), None
patent: A-8-54339 (1996-02-01), None
patent: A-8-278179 (1996-10-01), None
patent: A-8-338805 (1996-12-01), None
patent: U-63-107845 (1998-07-01), None
patent: B2-2837442 (1998-12-01), None
patent: A-11-83734 (1999-03-01), None
patent: A-11-325427 (1999-11-01), None
patent: A-2000-74830 (2000-03-01), None
patent: A-2000-206041 (2000-07-01), None
patent: A-2000-510950 (2000-08-01), None
patent: A-2000-283915 (2000-10-01), None
patent: A-2000-314342 (2000-11-01), None
patent: A-2001-74653 (2001-03-01), None
patent: A-2001-124674 (2001-05-01), None
patent: A-2001-174410 (2001-06-01), None
patent: A-2002-48711 (2002-02-01), None
patent: A-2002-506222 (2002-02-01), None
patent: A-2002-131198 (2002-05-01), None
patent: A-2003-114192 (2003-04-01), None
patent: A-2003-139701 (2003-05-01), None
patent: A-2003-215036 (2003-07-01), None
patent: A-2003-344244 (2003-12-01), None
patent: A-2004-55183 (2004-02-01), None
patent: A-2004-117259 (2004-04-01), None
patent: A-2004-264146 (2004-09-01), None
patent: A-2004-317148 (2004-11-01), None
patent: A-2005-23249 (2005-01-01), None
patent: A-2005-24251 (2005-01-01), None
patent: A-2006-58009 (2006-03-01), None
patent: A-2006-184180 (2006-07-01), None
patent: WO 97/43609 (1997-11-01), None
patent: WO 99/46578 (1999-09-01), None
patent: WO 02/095376 (2002-11-01), None
patent: WO 2005/077001 (2005-08-01), None
patent: WO 2005/077001 (2005-08-01), None
patent: WO 2005/111585 (2005-11-01), None
patent: WO 2005/111585 (2005-11-01), None
patent: WO 2006/118347 (2006-11-01), None
patent: WO 2007/069786 (2007-06-01), None
Sep. 16, 2010 Office Action issued in U.S. Appl. No. 12/224,793.
Deguchi et al., “Development of direct and high response exhaust gas measurement (2); The techniques and the performance evaluation of the measurement equipment,”Preprints of Meeting on Automotive Engineers,May 23, 2007, No. 12-07, pp. 25-28.
Abe et al., “Advanced Combustion Control System by Real-time Measurement of CO, O2Concentration in Refuse Incineration Plant,”Mitsubishi Heavy Engineering Report,vol. 38, No. 1, 2001, pp. 20-23 and 62.
Jan. 31, 2011 Notice of Allowance in U.S. Appl. No. 12/224,793.
Office Action issued by the U.S. Patent and Trademark Office in U.S. Appl. No. 11/918,650 on Mar. 5, 2010.
Supplementary European Search Report issued in European Patent Application No. 06732512.6 mailed Mar. 17, 2010.
Supplementary European Search Report issued in European Patent Application No. 07744631, dated Jan. 30, 2009.
International Search Report issued in Application No. PCT/JP2007/061245 mailed Sep. 4, 2007 (with Translation).
Office Action issued in U.S. Appl. No. 12/159,042 on Apr. 16, 2010.
International Search Report issued in Application No. PCT/JP2006/325566 mailed Jan. 23, 2007.
International Search Report issued in Application No. PCT/JP2006/309360 mailed May 30, 2006 (with Translation).
Yamakage ct al., “Development of direct and high response exhaust gas measurement (I),”Society of Automotive Engineers of Japan, Inc.,Publication No. 20075153, No. 12-07, pp. 21-24, 2007 (with Translation).
U.S. Appl. No. 12/224,793 filed Sep. 5, 2008 in the name of Tomoyasu Iwase et al.
U.S. Appl. No. 12/083,521 filed Apr. 11, 2008 in the name of Katsutoshi Goto et al.
U.S. Appl. No. 11/918,650 filed Nov. 17, 2007 in the name of Katsutoshi Goto et al.
International Search Report issued in Application No. PCT/JP2007/066817 mailed Nov. 27, 2007.
Supplementary European Search Report issued in European Patent Application No. 06843037 mailed on May 11, 2009.
Yamakage et al., “Development of Direct and Fast Response Gas Measurement,” Publication No. 2008-01-0758, 2008.
Yamakage et al., “Development of Direct and High Response Gas Measurement,” Publication No. 20070351, 2007 (with Abstract).
Davidy et al., “Development of Inverse Radiative Method for Measuring Gaseous and Particles Concentrations in the Exhaust Plumes by Using Remote Sensing Method,” 41thAIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit,AIAA 2005-3577, pp. 1-21, 2005.
Kubota et al., “Kogaku Gijutsu Handbook,” pp. 1112-1117, Apr. 1997 (with Translation).
U.S. Appl. No. 12/159,042, filed Jun. 24, 2008 in the name of Masahiro Yamakage et al.
Aug. 22, 2011 Supplemental Search Report issued in European Application No. 07806294.0.

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