Appeal No. 2000-1243
Application 08/826,112
(K)1 over a range of wavelengths from 600 to 800 nm, as shown in
Figures 2 and 3 (not reproduced below). Id. at 8, ll. 3-10.
B. The claims2
Claim 13, which is broader than the other independent claim,
claim 23, reads as follows:
13. A dual layer pre-recorded optical storage
disc, comprising, in order:
a transparent substrate having a first data pit
pattern in one major surface thereof;
a non-recordable partially reflective layer,
adjacent the first data pit pattern, comprising
antimony sulfide;
a transparent spacer layer;
a second data pit pattern; and
a highly reflective layer provided adjacent the
second data pit pattern.
In view of Horikago's teaching (discussed infra) that data
can be written into an antimony sulfide layer by light having a
wavelength of 400 to 500 nm, the term "non-recordable" as used in
claim 13 is understood to mean that light is not used to write
data into the antimony sulfide layer.
1 Patent No. 4,360,908 (copy enclosed) explains that the
imaginary component of the index of refraction is also known as
the extinction coefficient or absorption parameter (col. 5, ll.
47-52).
2 Claim 19 is incorrectly reproduced in the Appendix to
Appellants' brief: "antimony (III) sulfide" should read "antimony
(V) sulfide."
5
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