Appeal No. 1996-3262
Application No. 08/141,632
operated at constant temperature, 20 while Appellants' claimed
invention calls for heat pulses applied to the film, a
temperature variation of the film caused by the heat pulse being
measured, and a measurement output being generated in response to
the heat pulse. Appellants also point to claim 17 wherein "heat
pulse" is twice recited.
In addition, Appellants contend that Bohrer et al does not
apply "heat pulses" of the type disclosed in the specification
and referenced in these claims.
We find, however, that Bohrer et al does perform a heat
pulse operation as claimed and not only constant temperature
operation as set forth as an earlier embodiment. Bohrer et al, 21
in an embodiment disclosed toward the end of his specification
explicitly provides "the central element being self heated by
current pulses," "the sensor resistance elements receive
corresponding heat pulses," and "such that heat pulses cause
corresponding heat pulses in the sensor elements." In addition,
Bohrer et al states22 "the heater can be pulsed or operated at
frequencies of up to and beyond 50 Hz as desired."
20
20 Pointing to column 5, lines 10-20 of this reference
21
21 At column 14, lines 59-68, through column 15, lines 1-38
22
22 Column 17, lines 35-38
10
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