Appeal No. 94-2267
Application No. 07/896,799
polymer alloy as a whole must be also transparent. Id.
According to page 1 of the specification, the transparency of the
organic polymer alloy must be such that the organic polymer alloy
is suitable for optical applications. The specification then
goes on to state at page 2:
The transparency of films made from polymer alloys
is an indication that the components are homogeneously
mixed.
The requirement for transparency, therefore, limits the types of
materials included in the claimed organic polymer alloys. None
of the Lakshmanan, Gallucci and Ames references indicates
otherwise. As indicated by appellants, they are directed to
different polymers and are no use in determining the scope of the
appealed claims.
As evidence of unpatentability, the examiner relies on the
Robeson reference. The Robeson reference is relied upon to show
that blends of a crystalline poly(aryl ether ketone) and the
claimed polyarylate are known. According to the examiner, the
crystalline poly(aryl ether ketone) of the Robeson reference
inherently contains some amorphous phase as indicated by the
Isayev reference. Although the examiner recognizes that the
Robeson reference is silent as to the requirement for, inter
alia, transparency, the examiner does not explain why the Robeson
3
Page: Previous 1 2 3 4 5 6 7 Next
Last modified: November 3, 2007