Appeal 2007-0128
Reexamination Control 90/006,208
Patent 5,573,648
sensors. Further, the electrodes claimed by Grot and Uchida are not limited to a
particular use. Also, Dempsey teaches that, at a minimum, there is overlap
between Afuel cell@ electrodes and electrodes that may be used in gas sensors. We
find that Grot and Uchida, like Dempsey, are within the field of Atwood’s gas
sensor endeavor. We further find that Grot and Uchida are reasonably pertinent to
the problem addressed by Atwood, selecting an appropriate electrode that
generates electrical current in the presence of oxidation/reduction reactions. We
find that one of ordinary skill in the art would understand that Grot and Uchida
represent
analogous art as Grot and Uchida are references within the field of electrochemical
gas sensors and are reasonably pertinent to Atwood’s endeavor to select an
appropriate electrode for its gas sensor.
Similarly, Vanderborgh explicitly teaches that its electrodes are not limited
to fuel cells and may be utilized in applications that involve electrochemical
generation of electrical power from the consumption of reacting gases or liquids.
(Vanderborgh, col. 11, ll. 20-38). Indeed, Atwood dependent claim 12 is directed
towards the detection of water vapor and Vanderborgh states that its invention is
applicable to systems wherein water in the vapor state is electrolyzed to generate
hydrogen and oxygen. (Id., col. 11, ll. 26-29). We find that Vanderborgh, like
Grot and Uchida, is reasonably pertinent to the problem address by Atwood, the
selection of an appropriate electrode that generates electrical current in the
presence of oxidation/reduction reactions. We further find that Vanderborgh is a
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