Appeal No. 1997-0305
Application No. 08/286,085
1. An apparatus for separating and collecting hydrogen gas from gas mixtures
which comprises in combination:
membrane-based means for selectively separating hydrogen gas
from the gas mixture;
means for bringing the gas mixture into contact with said membrane-
based selective separating means for hydrogen gas, whereby a
partial pressure differential is established therein;
means for receiving and trapping the hydrogen gas which is
separated from the gas mixture by said membrane-based selective
separating means on the lower hydrogen partial pressure side
thereof; and
means for removably connecting said membrane-based means to
said hydrogen gas trapping means such that hydrogen gas separated
from the gas mixture may flow into said hydrogen gas trapping means
from said membrane-based means, and such that said hydrogen gas
trapping means may be separated from said membrane-based
means.
The examiner relies upon the following references in the rejection of the
appealed claims.
Reilly et al. (Reilly) 3,922,872 Dec. 02, 1975
Doshi 4,398,926 Aug. 16, 1983
Dittrich et al. 4,528,003 Jul. 09, 1985
Kusuki et al. 5,064,446 Nov. 12, 1991
Ekiner et al. 5,102,600 Apr. 07, 1992
Appellants' claimed invention is directed to an apparatus for separating and
collecting hydrogen gas from gas mixtures. The apparatus comprises a combination of a
membrane-based means for selectively separating hydrogen from the gas mixture
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