Appeal No. 1997-0229
Application No. 08/039,260
connected in series or in parallel, wherein the input pressure
on the inlet side of the hydrocyclone or hydrocyclones is
between 0.5 and 6 bars; and (d) fractionally separating the
accept component exiting from the hydrocyclone or
hydrocyclones into a fiber component, an agglomerate component
and a filler and pigment component, by passing the accept
component through an 80 to 300 µm mesh screen for separation
of the fiber component and through a screen with a mesh size
greater than 45 µm for separation of the agglomerate
component, and returning the fiber component and the filler
and pigment component into the raw material processing step of
the paper, pulp board or cardboard manufacturing process.
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
Bauman et al. (Bauman) 3,897,301 Jul. 29,
1975
Maxham (Maxham ‘258) 4,983,258 Jan. 08,
1991
Maxham (Maxham ‘599) 5,137,599 Aug. 11,
1992
(filing date Sep. 28,
1990)
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