Appeal No. 2004-0479
Application No. 09/780,864
7. Cambron states in the specification that "[t]his invention
relates to polyurethanes, and to catheters and other articles
formed from the polyurethanes, which are radiopaque due to the
incorporation of halogenated moieties into the polymer
structure. In preferred embodiments, the polyurethanes are
additionally optical transparent." See Cambron, column 3,
lines 11-16.
8. Cambron states in the specification that "[i]mportantly,
the polyurethanes of this invention are radiopaque because of
structural units contained within the polymer itself. This
eliminates the necessity to blend a material with the polymer
to provide radiopaque. Thus, the disadvantage of physical
blends are avoided." See Cambron, column 3, lines 30-34.
9. Cambron states in the specification that "[P]olyurethanes
which are radiopaque and yet optically transparent provide a
unique combination of desirable properties for catheters in a
polymer noted for its biocompatibility and other advantageous
properties for medical applications." See Cambron, column 3,
lines 42-46.
1919
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