Electrolysis: processes – compositions used therein – and methods – Electrolytic analysis or testing – For oxygen or oxygen containing compound
Reexamination Certificate
2007-06-26
2011-11-08
Olsen, Kaj K (Department: 1724)
Electrolysis: processes, compositions used therein, and methods
Electrolytic analysis or testing
For oxygen or oxygen containing compound
C204S428000
Reexamination Certificate
active
08052862
ABSTRACT:
A limiting current type oxygen sensor having a gas diffusion mechanism comprising a gas diffusion bore and an internal space communicating with the gas diffusion bore for supplying a diffusion-rate-determined gas. The gas diffusion mechanism may be configured such that an oxygen concentration gradient within the internal space satisfies the expression:in-line-formulae description="In-line Formulae" end="lead"?1/Ilim=(1/4FDCo2){(l/S)+(lin/Sin)}in-line-formulae description="In-line Formulae" end="tail"?based on the Faraday constant (F); a diffusion coefficient (D); an oxygen concentration (Co2); a bore area (S) of the gas diffusion bore; a bore length (l) in the axial direction of the gas diffusion bore; a distance (lin) in the internal space between the first electrode and the inner surface opposed thereto; an effective cross section (Sin) of the internal space; and an output current value (Ilim). This makes it possible to accurately sense and measure the oxygen concentration, even at low oxygen concentrations, and achieve easy producibility and cost reducibility.
REFERENCES:
patent: 4938861 (1990-07-01), Kurosawa et al.
patent: 4950380 (1990-08-01), Kurosawa et al.
patent: 5288389 (1994-02-01), Yamada et al.
patent: 6205843 (2001-03-01), Tanaka et al.
patent: 2003/0188968 (2003-10-01), Naito et al.
patent: 0 442 415 (1991-08-01), None
patent: 0516038 (1992-05-01), None
patent: 1260814 (2002-11-01), None
patent: 52-72286 (1977-06-01), None
patent: 60-91251 (1985-05-01), None
patent: 60-93342 (1985-05-01), None
patent: 62-145161 (1987-06-01), None
patent: 62-263458 (1987-11-01), None
patent: 2-198352 (1990-08-01), None
patent: 3-165254 (1991-07-01), None
patent: 5-209860 (1993-08-01), None
patent: 07218468 (1995-08-01), None
patent: 10-142191 (1998-05-01), None
patent: 10185862 (1998-07-01), None
patent: 2000-131271 (2000-05-01), None
patent: 3373741 (2002-11-01), None
Machine translation JP 07-218468, 1995.
Kato Seiki
Matsuki Yukio
Nagano Ryouji
Taimatsu Hitoshi
Fujikura Ltd.
Olsen Kaj K
Sughrue & Mion, PLLC
Thai Susan
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