Appeal No. 95-4984
Application No. 08/038,369
said selected temperature being chosen as a temperature value
on said curve; and
the first and second periods of time being so chosen that the
cumulative time consisting of said first and second
periods of time does not exceed the time of heating on
said curve corresponding to said selected temperature.
The examiner relies upon the following references as
evidence of obviousness:
Stueke 4,685,985 Aug. 11, 1987
Okano et al. (Okano) 4,865,882 Sep. 12, 1989
Appellants' claimed invention is directed to a process of
coating a surface of a metal article with a curable powder
coating. The process entails (1) heating the metal article to
a selected temperature and maintaining that temperature for a
first period of time, (2) spraying a curable powder onto the
metal surface immediately after withdrawing the metal from the
oven, followed by spraying additional curable powder until the
desired thickness of powder is achieved, (3) reheating the
coated metal article to the same temperature employed during
the initial heating, and (4) maintaining the coated metal
article at that temperature for a second period of time. The
selected temperature, the first period of time and the second
period of time are "chosen based upon experimentally
determined data which defines a curve plotting temperature
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