Appeal 2007-0128
Reexamination Control 90/006,208
Patent 5,573,648
36) LaConti Table I lists a variety of gases that can be detected including carbon
monoxide, nitric oxide, alcohol, hydrogen, oxides of sulfur, hydrogen sulfide,
chlorine, bromine and oxygen. (LaConti, Table 1).
vi. Tomantschger, U.S. Patent 5,302,274
37) The Examiner states that Dempsey, Grot and Uchida fail to Aexplicitly recite
the use of a hydrated metal oxide protonic conductor electrolyte.@ (Examiner=s
Answer, p. 7).
38) Tomantschger teaches a gas sensor cell for quantitative measurement of
volatile gas components. (Tomantschger, abstract).
39) Tomantschger states that a specific gas sensor cell system can be devised
using suitable catalysts and electrolytes to test for any toxic, combustible or
flammable gas. (Id. at col. 2, ll. 42-46).
40) Tomantschger’s gas sensor cell comprises a sensing electrode and a counter
electrode on either side of an ion conductive electrolyte. (Id. at abstract).
41) Tomantschger teaches that the sensor and electrolyte are chosen to produce a
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