Appeal 2006-2791
Application 09/729,626
cleaning a surface having particulate soils, where the cleaning sheet
comprises a first layer of nonwoven material, a second layer of nonwoven
material, with the first layer entangled to the second layer forming a working
face and a back face, and the working face has non-random raised regions
and recessed regions with a specified Average Height Differential and
channel width (Br. 2). Independent claim 1 is illustrative of the invention
and a copy of this claim is reproduced below:
1. A disposable macroscopically three-dimensional non-apertured
cleaning sheet for cleaning a surface having particulate soils, said cleaning
sheet comprising a first layer of nonwoven material, a second layer of
nonwoven material wherein said first layer is entangled to said second layer,
wherein said first and second layers form a structure having a working face
and a back face, wherein the working face comprises non-random raised
regions and recessed regions, wherein said working face has an Average
Height Differential of at least about 1 mm, wherein said recessed regions
form a continuous pattern in the X-Y dimension surrounding discrete raised
regions wherein said continuous recessed pattern comprises channels having
a width of between about 1 mm to about 8 mm and wherein said non-
random raised regions and said recessed regions form pockets on the surface
of said working face for trapping particulates from said surface to be
cleaned.
The Examiner has relied on the following prior art reference as
evidence of obviousness:
Greenway US 5,281,461 Jan. 25, 1994
ISSUES ON APPEAL
Appellants have stated that the only ground of rejection presented for
review in this appeal is the rejection of claims 1, 49, and 62 under 35 U.S.C.
2
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