Appeal No. 95-4838
Application No. 08/131,643
air. See Abstract and column 3, lines 15-21. The intent is
the removal of particles of less than 20,000 nm from waste
gas, i.e. these particles being inclusive of submicron
particles. See Kito column 5, lines 15-21. Based upon the
above findings, we conclude that it would have been obvious
for one of ordinary skill in the art to remove small submicron
particles by passing the exhaust waste gas of Figure 1 through
the devices taught by either Yeh or Kito. Accordingly, the
limitations of each independent claim, 1, 10 and 20, as well
as the express limitations of claims 6, 14 and 21, directed to
an electrostatic filter are taught by the combined references
of record.
As to claim 11 requiring an output for passing the
treated and filter exhaust gas to outside air, we concur with
the examiner’s explanation in his Answer, page 7, wherein the
examiner states, “both Yeh and Kito et al clearly teach an
output (arrow of Kito et al and 14 of Yeh....” Furthermore
see Yeh’s description of outdoor air quality control, column
4, lines 22-23, and the purification of air at column 4, lines
24-28. Note also the withdrawal of the fluid medium after
electrostatic treatment, column 8, lines 6-9 and column 9,
7
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