Appeal 2007-1381
Application 10/686,069
B. Facts
The following facts are supported by a preponderance of the evidence:
1. McClellan is directed to a forming tube for winding glass fibers
that, like the claimed tube, is formed from spirally wound
paperboard plies (McClellan, col. 2, ll. 23-36).
2. The process of winding involves winding glass fibers treated
with binder onto the forming tube, and drying the binder. After
drying, the forming tube is removed from the glass fiber
winding by partially collapsing the tube and extracting it
(McClellan, col. 3, l. 3-col. 4, l. 1).
3. The outer ply of McClellan’s tube is treated with a conventional
release agent to facilitate release of the tube from the glass fiber
winding (McClellan, col. 2, ll. 42-47). The only release agent
taught in McClellan as conventional for this use is silicone
release agent (McClellan, col. 1, ll. 31-35; col. 5, ll. 36-39).
4. McClellan is silent with respect to the use of a sizing agent or
any other agent that provides liquid impermeability but vapor
permeability to the paperboard of the forming tube.
5. Von Hoessle is directed to a coil form. This coil form has a coil
support with up to 100 km of a fiber-optic waveguide wound
upon it. In use, the coil form is carried on board an airplane or
missile and the fiber-optic wave guide is unwound from the coil
support (Von Hoessle, col. 1, ll. 10-20). The coil support is not
removed from the winding by collapsing it as in the McClellan
process.
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Last modified: September 9, 2013