Appeal 2007-1168
Application 10/211,407
layers will partially compensate for the holes in the meltblown layers.
(Sorrick at 5:13–24.)
Nissan
40. Nissan teaches a fibrous blanket designed for sound insulation having
a surface layer of nonwoven polypropylene fabric with an average apparent
density of 0.03 to 0.06 g/cm3, 5-15 mm thick, the fibers having a diameter
of 0.l to 10 μm, and an inner layer that is 2 to 5 times as thick as the surface
layer, i.e., 1 to 3 cm thick. (Nissan at 3, abstract.)
The Examiner's Rejections
Claims 1 and 6–10
41. The Examiner finds that Lutzow teaches all structures and limitations
required by claims 1 and 6-10 but for the required thickness of the
meltblown polypropylene fiber layer being between about 0.0127 and about
0.254 cm and having a weight between about 0.5 to about 10 ounces per
square yard. (Answer at 3–4.)
42. In particular, the Examiner finds that Lutzow teaches meltblown,
100% polypropylene fibers having diameters of ranging from about 0.1
to 100 μm, preferably from about 1 to 15 μm. (Answer at 3.)
43. The Examiner finds further that Lutzow teaches needle punched fibers
having a diameter of about 1 to 25 microns made from a composite material
of nylon and polyester. (Answer at 3.)
44. The Examiner finds that Sorrick teaches that a layer of meltblown
polypropylene fibers having less than a minimum thickness will be
10
Page: Previous 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Next
Last modified: September 9, 2013