Appeal No. 96-1501
Application No. 08/172,517
of appellants' specification) and that the admitted prior art
also evidences that it is well known to utilize an electrostatic
deposition technique for coating a powder of a polyolefin
composition onto a surface to be coated (page 4 of appellants'
specification). We also agree in substance with the examiner's
position that the patent to Walker discloses a method of
producing a container wherein components of the container are
coated by tinning, jointed to one another, and then subjected to
heat, thus causing the components coated by tinning to be sweated
together.
However, Walker is directed to a metal can 1 formed by
welding breast 2 and body 3 to a ring 7 (Figure 1 and page 2,
lines 1-3), tinning the connected parts inside and out (page 2,
lines 12-13), and forming a base 13, 15 which is also tinned over
the entire exposed surfaces and then cooled (page 2, lines 20-
34). The base and the body are then assembled, all the parts are
then subjected to heating to cause the tinned surfaces to melt
and to flow, thus causing the parts to be sweated together (page
2, lines 34-40).
It is clear that the process for coating the inner surface
of metal containers of appealed claim 1 requires, inter alia,
electrostatically depositing on the inside surface of bottoms,
7
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