Appeal No. 2007-0093 Page 7
Application No. 10/924,119
reference into Le-Khac ‘428, specifically teaches that the filter cake can be washed with
the organic complexing agent tert-butyl alcohol in a filtration apparatus (Le-Khac ‘908,
column 10, lines 16-33), providing further motivation to have used Hinney’s filter press
for the filtering, washing and mechanically removing steps of claim 12. Accordingly, we
do not find that the Examiner inappropriately invoked hindsight or Appellants’
specification in setting forth a prima facie case of obviousness. We affirm the rejection
of claim 12. Claims 13-19 fall with claim 12 because Appellants did not provide
separate arguments for patentability.
In reaching this decision, we have found it unnecessary to address the Heckl and
Hoch patents which appear to have been relied upon by the Examiner to meet
limitations recited in dependent claims which Appellants did not separately argue. See
Answer, page 4, especially ¶¶ 4-8.
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