Measuring and testing – Gas analysis
Reexamination Certificate
2006-08-15
2006-08-15
Williams, Hezron (Department: 2856)
Measuring and testing
Gas analysis
C340S632000, C340S603000, C340S541000
Reexamination Certificate
active
07089780
ABSTRACT:
A vapor sensing device that is sufficiently small and lightweight to be handheld, and also modular so as to allow the device to be conveniently adapted for use in sensing the presence and concentration of a wide variety of specified vapors. The device provides these benefits using a sensor module that incorporates a sample chamber and a plurality of sensors located on a chip releasably carried within or adjacent to the sample chamber. Optionally, the sensor module can be configured to be releasably plugged into a receptacle formed in the device. Vapors are directed to pass through the sample chamber, whereupon the sensors provide a distinct combination of electrical signals in response to each. The sensors of the sensor module can take the form of chemically sensitive resistors having resistances that vary according to the identity and concentration of an adjacent vapor. These chemically sensitive resistors can each be connected in series with a reference resistor, between a reference voltage and ground, such that an analog signal is established for each chemically sensitive resistor. The resulting analog signals are supplied to an analog-to-digital converter, to produce corresponding digital signals. These digital signals are appropriately analyzed for vapor identification. The device can then subsequently transmit the digital signals over a computer network, such as the Internet, for analysis at a remote location.
REFERENCES:
patent: 1455263 (1923-05-01), Oberfell
patent: 2743167 (1956-05-01), Cherry
patent: 3323350 (1967-06-01), Roberts
patent: 3415108 (1968-12-01), Hubner
patent: 3427862 (1969-02-01), Hubner
patent: 3529459 (1970-09-01), Vilinastras
patent: 3540261 (1970-11-01), Scroggins
patent: 3877291 (1975-04-01), Hoppesch et al.
patent: 4329870 (1982-05-01), Farmer
patent: 4360856 (1982-11-01), Witthaus
patent: 4670405 (1987-06-01), Stetter et al.
patent: 4761639 (1988-08-01), Pyke et al.
patent: 4818348 (1989-04-01), Stetter
patent: 4864492 (1989-09-01), Blakely-Fogel et al.
patent: 4907441 (1990-03-01), Shurmer
patent: 4922669 (1990-05-01), De Pas et al.
patent: 4933669 (1990-06-01), Lyons
patent: 5025653 (1991-06-01), Schuldt
patent: 5153902 (1992-10-01), Buhl et al.
patent: 5266944 (1993-11-01), Carroll et al.
patent: 5309777 (1994-05-01), Schmitt et al.
patent: 5390530 (1995-02-01), Hosonuma et al.
patent: 5469369 (1995-11-01), Rose-Pehrsson et al.
patent: 5571947 (1996-11-01), Senn et al.
patent: 5582797 (1996-12-01), Kewley et al.
patent: 5604299 (1997-02-01), Cobb
patent: 5654497 (1997-08-01), Hoffheins et al.
patent: 5677476 (1997-10-01), McCarthy et al.
patent: 5708195 (1998-01-01), Kurisu et al.
patent: 5719325 (1998-02-01), Kiesele et al.
patent: 5801297 (1998-09-01), Mifsud et al.
patent: 5828851 (1998-10-01), Nixon et al.
patent: 5832411 (1998-11-01), Schatzmann et al.
patent: 5834626 (1998-11-01), De Castro et al.
patent: 5892950 (1999-04-01), Rigori et al.
patent: 5917433 (1999-06-01), Keillor et al.
patent: 5931913 (1999-08-01), Meriwether et al.
patent: 6013007 (2000-01-01), Root et al.
patent: 6052737 (2000-04-01), Bitton et al.
patent: 6061753 (2000-05-01), Ericson
patent: 6084510 (2000-07-01), Lemelson et al.
patent: 6085576 (2000-07-01), Sunshine et al.
patent: 6149787 (2000-11-01), Chow et al.
patent: 6175752 (2001-01-01), Say et al.
patent: 6208247 (2001-03-01), Agre et al.
patent: 6234006 (2001-05-01), Sunshine et al.
patent: 6267000 (2001-07-01), Harper et al.
patent: 6422061 (2002-07-01), Sunshine et al.
patent: 6608559 (2003-08-01), Lemelson et al.
patent: 6647328 (2003-11-01), Walker
patent: 6674625 (2004-01-01), Page
patent: 6816069 (2004-11-01), Quigley
patent: 6837095 (2005-01-01), Sunshine et al.
patent: 2002/0163579 (2002-11-01), Patel et al.
patent: 2002/0167595 (2002-11-01), Patel et al.
patent: 2002/0192117 (2002-12-01), Lewis et al.
patent: 2003/0197719 (2003-10-01), Lincke et al.
patent: 2004/0088113 (2004-05-01), Spoonhower et al.
patent: 2005/0041355 (2005-02-01), Page
patent: 2005/0061056 (2005-03-01), Sunshine et al.
patent: WO 92/22813 (1992-12-01), None
patent: WO 97/05476 (1997-02-01), None
Boehr Christopher K.
Nakayama Robert K.
Steinthal M. Gregory
Sunshine Steven A.
Foley & Lardner LLP
Frank Rodney
Smiths Detection Inc.
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