Appeal No. 1995-4405
Application No. 08/083,680
No. 14, filed November 28, 1994) and supplemental reply brief (Paper No. 16, filed April 3, 1995) for
the appellants’ arguments thereagainst.
THE INVENTION
Appellants’ claimed invention is directed to a method and system for controlling the
concentration of a gas of interest in a first or “reference” medium contained in a first gas-permeable
reference enclosure by means of a second or “reservoir” source of the gas contained in a second gas-
permeable enclosure which is used to control changes in the partial pressure of the gas in a common
environmental atmosphere formed within a gas-tight hollow common enclosure containing both the
reference enclosure and the reservoir source as a function of temperature. The reservoir source is
formulated such that the solubility of the gas therein is more temperature sensitive, i.e., responds faster,
over a selected temperature range than in the reference medium. (Brief, pages 2-3).
For example, as the temperature of the common enclosure and its contents rises, the solubility
of the gas in both the reference medium and the reservoir source decreases. Gas from the reservoir
source is released into the common atmosphere at a faster rate than it is released from the reference
medium, thereby dominating the increase in the partial pressure of the gas in the common atmosphere
such that the amount of gas released from the reference medium is controlled (specification, para.
bridging pages 5-6). In other words, the reservoir source controls the partial pressure of the gas inside
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