Appeal 2007-0492
Application 10/810,960
1 stream having a greater concentration of oxygen gas than the air stream,
2 wherein the air delivery system includes at least one oxygen-enrichment
3 assembly adapted to produce the oxygen-enriched stream from the air
4 stream, and further wherein the oxygen-enrichment assembly includes at
5 least one oxygen-selective membrane;
6 [c] a fuel cell stack adapted to receive at least a portion of the product
7 hydrogen stream and the oxygen-enriched stream and to produce an
8 electric current therefrom; wherein the fuel cell stack is adapted to emit a
9 cathode exhaust stream containing water; and
10 [d] a water recovery assembly adapted to receive the cathode exhaust
11 stream and to produce a product water stream therefrom.
12 (Brief, Claim Appendix at 1; paragraph labels and emphasis added to highlight the
13 disputed limitations.)
14 Claim 61 reads:
15 A fuel cell system, comprising:
16 [a] a fuel processing assembly adapted to produce a product hydrogen
17 stream containing at least substantially pure hydrogen gas from at least
18 one feed stream that comprises at least a carbon-containing feedstock;
19 [b] an air delivery system adapted to receive an air stream having a
20 concentration of oxygen gas and to produce therefrom an oxygen-enriched
21 stream having a greater concentration of oxygen gas than the air stream
and a byproduct stream having a lower concentration of oxygen gas than
22 the air stream, wherein the air delivery system includes at least one
23
oxygen-enrichment assembly adapted to produce the oxygen-enriched
24 wherein the byproduct stream is
25 stream from the air stream, and further
26 used to pressurize the supply of liquid fuel;
27 [c] a fuel cell stack adapted to receive at least a portion of the product
28 hydrogen stream and the oxygen-enriched stream and to produce an
29 electric current therefrom; wherein the fuel cell stack is adapted to emit a
30 cathode exhaust stream containing water; and
31 [d] a water recovery assembly adapted to receive the cathode exhaust
32 stream and to produce a product water stream therefrom.
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