Appeal No. 1998-3094
Application No. 08/550,968
plexifilimentary film-fibril strands of a fiber-forming
polyolefin (col. 2, lines 52-53). In figures 1, 3 and 4, the
solution contains 22 wt% polyethylene, which falls within the
appellants’ range of 8-35 wt%, and 78 wt% of a
pentane/co-solvent spin liquid (co. 5, lines 7-16), which
falls within the appellants’ range of 92-65 wt%. The
co-solvents in figures 1, 3
and 4 are, respectively, methanol, HFC-134a (a hydrofluoro-
carbon), and carbon dioxide. All of these co-solvents are in
the appellants’ group A, and the percentage of each co-3
solvent in the spin liquid in figures 1, 3 and 4 is 10 wt%.
Thus, the solutions used to obtain Shin’s figures 1, 3 and 4
anticipate the solution recited in the appellants’ claim 37.
The solution in the appellants’ claim 37 also is
anticipated by the solutions in Shin’s examples 7-9 (table 2).
Each of these solutions contains 22 wt% polyethylene and 78
wt% pentane/co-solvent spin liquid, 10 wt% of which is carbon
dioxide.
3Shin teaches that the co-solvents have atmospheric boiling point
temperatures which are less than 100ºC (col. 6, lines 25-29).
5
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