Interference No. 103,036
device to the battery housing [CR 60], (4) that the specification
teaches that the "electrically insulating layers that surround
the conductive layer are very thin," [CR 60], (5) that the
specification at column 7, lines 19 to 21, teaches a thickness
such as one or two mils [CR 61], and (6) that the disclosed
thickness of one or two mils suggests that the electrically
insulating layers for the other disclosed indicator devices have
a similar thickness [CR 61].
Dr. Feder also testified at CR 61 as follows:
(90) It is clear from the party
Burroughs et al.'s original disclosure that
the nonconducting base layer under the
conductive leads 14 is electrically non-
conducting. This is so because the original
disclosure is silent regarding thermal
isolation, because the thickness range of one
to two mils is known to be suitable for
electrical insulation, and because it is well
known that electrical insulation is necessary
to prevent electrical short circuiting.
[Emphasis in the original.]
Referring to the second embodiment of Figure 10, which
is described at column 8, line 62 to column 9, line 3 of the
Burroughs specification, Dr. Feder testified . . .
[I]t is my opinion that this embodiment of
the indicator device 10D would not be useful
because it would not provide an accurate
indication of the voltage state of the
battery. That is so because the conductive
layer 64 could not be made to generate
sufficient heat to overcome the heat sinking
provided by the battery housing in order to
sufficiently increase the temperature of the
heat-sensitive color indicator material. The
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