Interference No. 103,169
incorporated in to their proposal: and (3) BX P, the FM proposal submitted to the AF on
January 31, 1983.
BX J sets forth the steps of (1) using a solution (PPA); (2) orienting the molecules
by, e.g., extrusion and blowing, extrusion with lateral shear(spin) and stretching; and (3)
coagulating with water (see BX J20). Lusignea and Davis testified that extrusion with
lateral shear involves the use of a “counter-rotating die” (BR 9:840-43 and BR 1: 39-41).
Guzdar confirms this meeting and the discussion therein (BR 4:370-379, 365-366). BX N
describes a process for the extrusion of PBT from a solution of PBT and PPA which
includes tube extrusion with a counter-rotating die followed by coagulation and removal of
the solvent (BX 39-40). BX P describes a process for producing biaxial oriented films of
PBT by extruding PBT in PPA, its polymerization solvent, through a counter-rotating die
followed by coagulation and removal of the solvent. Baars et al. assert that the disclosure
in each of BX N and BX P is directed to PBT in PPA (its polymerization solvent) and
describes the use of the polymerization mixture as set forth in the count.
Chenevey et al.’s sole argument with regard to the Baars et al. conception is that
Baars et al. proposal, BX P, does not show that Baars et al. contemplated the use of a
?polymerization mixture” as set forth in step (i) of the count. We do not find the Chenevey
et al. argument to be persuasive. The Baars et al. record demonstrates that the
polymerization mixture was contemplated by the inventors. BX P, 2-5 states ?...it
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