Appeal No. 1996-3262
Application No. 08/141,632
Nakahata et al and substitute this structure for components of
either of the very different types of heated flow sensors
disclosed by Inada et al or Ohta et al, as they are diverse
devices with incompatible structural and operating
characteristics, and different purposes.
The Examiner26 contends that it would have been obvious to a
person of ordinary skill in the art at the time the invention was
made to use a diamond film in the Ohta et al or Inada et al
devices in order to achieve better speed response to temperature
since diamond film is well known for its higher thermal response
speed and good heat resistance. Further, the Examiner states he
gave no weight to the limitation "a diamond film serving to be in
contact with the fluid."
As regards to Ohta et al, the Examiner states27 "Pulse
heating is common in the art where a pulse of current is provided
to the heating element to heat the fluid passing by and at the
downstream end a sensor sensing the temperature of the heated
fluid."
In regard to Appellants' argument that none of the
26
26 Answer, page 6
27 First Answer, page 7
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