Appeal No. 1996-0647
Application No. 07/871,401
Kringstad or Technical News but reverse all other rejections
for reasons which follow.
OPINION
A. The Rejection of Claims 1-3 and 5-8
The examiner applies Granum for its teaching of bleaching
pulp in a D/C-ZEH bleach sequence (Page J26, column 2, bleach
sequence 4) to produce a pulp with a total organic chloride
content of less than 5 mg/100 g (Answer, page 3). The
examiner further applies "Technical News" and Kringstad for
the teaching to use low chlorine multiples in pulp bleaching 5
to prevent dioxin formation ("Technical News"), or
above). This appears to be an inadvertent error by the
examiner and appellant was aware of the references applied in
the rejection of claim 8 (see the Brief, page 5).
Accordingly, the examiner’s analysis in the Answer is
considered to include Kringstad for every occurrence of Berry
et al.
5Although not necessary for our decision, we note that the
examiner’s statement regarding the claimed limitation of the
ratio of "C" factor to ozone has assumed that the artisan
would lower the amount of chlorine/chlorine dioxide used while
keeping the amount of ozone constant. The secondary
references to "Technical News" and Kringstad do teach lowering
the amount of chlorine/chlorine dioxide used in order to
reduce the formation of chlorinated organics but we find no
teaching in the record as to the amount of ozone needed if the
chlorine was reduced.
5
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