Appeal No. 1998-1315
Application No. 08/334,751
DECISION ON APPEAL
This is a decision on appeal from the examiner’s final
rejection (Paper No. 10) and rejection in the first
supplemental examiner’s answer (Paper No. 19) of claims 1, 2,
4 through 9, 11 through 13 and 15 through 181. Claims 3, 10,
14, 19 and 20 stand allowed.
Appellants’ invention is directed to a device for use in
hypoxic and fire emergencies to protect the user from heat,
noxious and/or toxic gases. The device includes a “dry”
multi-stage filter (66) which converts atmospheric gases into
breathable air, and a mask 22 made to conform to fit around
the user’s mouth and nose region. The dry multi-stage filter
has: a first stage (82 and 88) which filters out smoke; a
second stage 90 for filtering out toxic gases; a third stage
92 for filtering out remaining gases; a fourth stage 94 which
converts carbon monoxide to carbon dioxide; and a fifth stage
1 From a review of the record, it is understood that it is
claims 1, 2, 4 through 9, 11 through 13 and 15 through 18
that are rejected as opposed to “1, 2, 4-9, 1-13 and 15-18" as
stated in the first supplemental examiner’s answer.
2
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