Appeal No. 1998-2297
Application 08/353,622
as a rotary power tool.
The examiner argues that “it would have been obvious for
one skilled in the art to use the power tool with certain
speed instead of the manual pad to obtain optimum results”
(answer, page 6). Both of the references relied upon by the
examiner, however, indicate that little rubbing is required to
clean surfaces using the disclosed compositions. McLaughlin
states that “a dried strip of the film formed by the
application of a wetted window cleaner to a glass surface
should be completely removable by no more than 5-6 passes,
preferably 1-3 passes of a dry paper towel applied to the film
at a pressure of about 1 lb./sq. inch, a force which
approximates the wiping force applied by an average user to
the dried film on a vertical glass surface” (page 10, lines
13-19), and that it is “an object of the present invention to
provide a product which minimizes the effort required to clean
a glass surface” (page 2). Thomas teaches: “Sometimes, the
product may be formulated as an ‘aerosol spray type’, so that
its foam discharged from the aerosol container will adhere to
the surface to be cleaned. At other times the aqueous medium
may be such as to result in a gel or paste, which is deposited
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