Appeal No. 2006-0631
Application No. 10/138,539
c) 0 to 10% by weight of a low molecular weight diol or
triol having an equivalent weight of from 31 to 99
which is different from b),
d) up to 0.5 parts by weight per hundred parts by weight
of components b) + c) of an organometallic catalyst,
e) 0 to about 5.0 parts by weight per hundred parts by
weight of components b) + c) of a viscosity adjusting
component, and
f) optionally, filler.
The examiner relies upon the following references as
evidence of obviousness:
Markusch et al. (Markusch) 5,166,303 Nov. 24, 1992
Adam et al. (Adam) 5,421,677 Jun. 6, 1995
Payne Material and Supply, LLC link under "Materials and
Supplies," "irrigation ditch canal linings, liner, seepage
control section" (April 9, 2001), http://www.payneholding.com/
pms.htm (hereinafter "Payne")
Guether et al., "Polyurethane/geotextile composites,"
Geotechnical Fabrics Report 30-34 (May 2001) (hereinafter
"Geotechnical")
Rick Stone Ranch, Payne Technology Companies, "Canal Lining
Demonstration Project," Exposed 40-mil Wet-Applied Polyurethane
Geocomposite Over Existing Concrete, 22 pages (Twin Falls, ID,
June 2000) (hereinafter "
Appellants' claimed invention is directed to a polyurethane/
geotextile composite comprising a geotextile that is soaked with
a polyurethane composition comprising the recited components.
The composite finds utility as a liner for canals, ditches, etc.
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