Appeal 2007-2893
Application 10/818,885
For clarity, we reproduce Proctor’s figure 1 below:
Accordingly, with reference to Proctor’s figure 1, we find that Proctor
teaches a cooking container for transferring heat from a heat source (e.g., an
open flame or burner) to food contents therein which comprises:
1. an inner wall (16, e.g., a shell) having a top opening and a first
heat-conductive plate bottom (e.g., 30) to distribute applied heat to food
contents within the shell;
2. a second heat-conductive plate (e.g., 28) that extends downwardly
from the first plate, is adapted for placement directly on a heat source (e.g.,
an open flame or burner), and forms a sealed cavity (40) of predetermined
volume between the first and second heat-conductive plates; and
3. an art recognized heat-transfer liquid that does not completely fill
the sealed cavity (40).
Proctor differs from claim 1 in two regards. First, Proctor does not
specifically teach that silicon oil is an art recognized heat-transfer liquid.
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