Appeal No. 96-1770
Application No. 08/296,307
examiner’s final rejection of claims 1 through 14, which are
the only claims in this application.
According to appellants, the invention is directed to a
method of controlling the decomposition temperature of an
organosilicon compound by adding an organotin compound in
order to improve the laydown of silicon upon metal surfaces
(Brief, page 2). Illustrative claim 1 is reproduced below:
1. A method of promoting the decomposition of an
organosilicon compound, said organosilicon compound having a
decomposition temperature required to achieve a given
percentage decomposition, in a process for depositing silicon
upon a metal surface, said method comprising the steps of:
admixing with said organosilicon compound an organotin
compound in an amount effective to lower said decomposition
temperature of said organosilicon compound to a reduced
decomposition temperature required to achieve said given
percentage decomposition to form an admixture; and
contacting said admixture with said metal surface at said
reduced decomposition temperature to thereby deposit silicon
thereon.
The examiner has relied upon the following reference as
evidence of obviousness:
Porter et al. (Porter) 4,692,234 Sep. 8, 1987
Claims 1 through 14 stand rejected under 35 U.S.C. § 103
as unpatentable over Porter (Answer, page 3, citing the final
rejection dated Mar. 21, 1995, Paper No. 5). We reverse this
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