Appeal No. 1997-1513
Application No. 08/249,736
The references of record relied upon by the examiner are:
Okumura et al. (Okumura) 4,895,677 Jan.
23, 1990
Ogino et al. (Ogino) EP 530,106 Mar. 3, 1993
(European Patent Application)
The appealed claims stand rejected 35 U.S.C. § 103 as
unpatentable over Ogino or Ogino in view of Okumura.
We will sustain the stated rejections.
The subject matter on appeal is broadly directed to a
polarizing film containing a mixture of dyestuffs. More
specifically, the subject matter on appeal is directed to a
dye-containing polarizing film comprising, in the film
substrate, at least one disazo dye represented by the
structural formula (I) shown in appealed claim 13 which is in
combination in the film with at least two kinds of dyes
selected from the dyes referred to as group [A]; group [B];
and group [C] as shown in appealed claim 13. In their brief
at page 4, appellants characterize the claimed polarizing film
as having a neutral color and as having the capability of
preventing light from passing through the films at the
"crossed state" over the visible radiation wave length region,
5
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007