Appeal No. 2000-0895
Application No. 08/754,797
The examiner describes Figure 7 of Magnusson as
disclosing a plastic water bottle having a tubular filter
cartridge 238 extending from a cap 234, the cap having a valve
assembly 230 and a recess 236 in which the cartridge 238 is
secured by snap ring 240 and O-ring 241 (answer, page 3). The
examiner acknowledges that Magnusson does not teach a tube of
filtering material or the filtering material having liquid
porous side walls (id. at 4). To remedy this deficiency in
Magnusson, the examiner cites Parker and Knight for their
disclosure of a filter cartridge comprising a tube of
filtering material having a liquid porous side wall, the flow
of liquid through each element being radial with respect to
the tube axis during filtering (id.). The examiner then
concludes that “[i]t would therefore have been obvious to
substitute the filter cartridge of either Parker or Knight in
the device of Magnusson to provide for the filtration of
suspended particles/gross particulates as taught by lines 42-
46 of column 8 of Magnusson” (id.). We note that column 8,
lines 42-46 of Magnusson read:
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