Appeal No. 95-3834
Application No. 07/947,569
The claimed invention
Appellant claims a dry engine oil additive comprising a
mixture of a granular metal alloy material and a granular
polytetrafluoroethylene. In a preferred embodiment of the
invention, titanium oxide or titanium dioxide granules may be
added to the mixture (Specification, p. 2). Claim 9 recites a
method of lubricating an engine and repairing surface
abrasions therein comprising (1) adding a supply of the
mixture of granulated metal alloy and polytetrafluoroethylene
to an oil supply within an engine and (2) running the engine
for a sufficient period of time to cause the metal alloy to be
burnished to bearing surfaces within the engine whereby the
polytetrafluoroethylene is embedded within the matrix of the
metal alloy.
Rejection under 35 U.S.C. § 103
Claims 1-12 are rejected under 35 U.S.C. § 103 as being
unpatentable over the combination of McCready and Cairns. We
reverse this rejection.
McCready discloses an engine oil additive lubricant
comprising a first polytetrafluoroethylene powder, a second
polytetrafluoroethylene powder and titanium dioxide. The
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