Appeals 2006-2874 and 2006-2747
Applications 08/544,212 and 09/287,664
Patent 5,401,305
1 Here is what Appellants say about Gordon '252:
2 In U.S. Pat. No. 4,206,252, Gordon
3 describes a process for depositing mixed oxide and
4 nitride coating layers of continuously varying
5 refractive index between a glass substrate and an
6 infra-red-reflecting coating, whereby the film
7 iridescence is eliminated. When silicon dioxide is
8 part of the mixed oxide film, the patent teaches
9 that volatile silicon compounds with Si―Si and
10 Si―H bonds are suitable precursors. Compounds
11 such as 1,1,2,2-tetramethyldisilane, 1,1,2-
12 trimethyldisilane, and 1,2-dimethyldisilane are
13 disclosed. All of the compounds containing Si―Si
14 and Si―H bonds to which reference is made are
15 expensive, and none are commercially available.
16
17 Reference to Gordon '252 confirms that Appellants are correct, at least
18 in part.
19 Plainly described in Gordon '252 is the use of a mixture of silicon and
20 tin precursors to make the film. See, e.g., Col. 6, line 64 through col. 7,
21 line 5.
22 While it is true that Gordon '252 describes the use of a mixture of a
23 mixed silicon oxide and silicon nitride (col. 6, line 12), Gordon '252 also
24 describes the use of other silicon and metal combinations, including
25 (1) silicon and tin (col. 6, line 11), (2) silicon and titanium (col. 6, line 13),
26 and (3) silicon and indium (col. 6, line 14).
27
28 Hochberg
29 Hochberg is a prior art document cited in Appellants' specification
30 (col. 3, lines 55-64).
31 Appellants say the following about Hochberg:
23
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Last modified: September 9, 2013