Appeal No. 2005-1662
Application No. 09/996,505
1. A sorbent cartridge comprising at least two
layers, wherein one of said layers comprises at least
sodium zirconium carbonate in said sorbent cartridge.
11. A sorbent cartridge comprising an alkali metal-
Group IV B metal carbonate, wherein one of said alkali
metal-Group IV B metal carbonate is present as a layer
in said sorbent cartridge.
The following prior art is relied upon by the examiner as
evidence of obviousness:
Polak et al. (Polak 4,650,587 Mar. 17, 1987
Smakman et al. (Smakman) 4,542,015 Sep. 17, 1995
Potts 5,234,603 Aug. 10, 1993
Marantz et al. (Marantz) 3,669,880 Jun. 13, 1972
Tawil et al. (Tawil) 4,025,608 May 24, 1977
The admitted prior art known as the REDY™ cartridge as
disclosed, for example, in Figure 8 of the appellant’s
drawing.
Claims 1, 3-9, 11, 13-16, 19-25, 29-38 and 50-61 are
rejected under 35 U.S.C. § 103(a) as being unpatentable over the
REDY™ cartridge in view of Polak, and the remaining claims on
appeal are correspondingly rejected over the aforementioned prior
art in various combinations with the other above listed
references.
We refer to the brief and reply brief and to the answer for
a thorough discussion of the opposing viewpoints expressed by the
appellant and by the examiner concerning these rejections.
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