Appeal No. 1998-1369
Application No. 08/622,620
agents and representative examples of each class. Eby 1
further teaches the addition of other agents such as
sulfurized fatty oils, antioxidants, thickeners, etc., at page
4, left col., ll. 42-55.
Hill teaches that additives in addition to the mercaptan
agent may include heat thickened fatty oils, sulfurized fatty
oils, organo-metallic compounds, sludge dispersers, etc. (col.
2, ll. 12-17). Michaelis teaches that the lubricating oil can
contain still further additives to improve the performance
properties, such as antioxidants, rust inhibitors, and
dispersants (col. 4, ll. 32-36). Michaelis further teaches
that the mercaptans can also be used in combination with other
EP/antiwear additives (col. 4, ll. 36-38). The reference then
lists specific representatives from each class of additives
(col. 4, l. 39-col. 6, l. 2), including specific wear-
resisting additives within the scope of component (A) of the
1Although not limited to the representative materials, we
note that Eby discloses, inter alia, an overbased composition
(calcium mahogany sulfonates) and a sulfur-containing
antiwear/EP agent (zinc methyl cyclohexyl dithiophosphate).
See the specification, page 8, ll. 28-29; page 11, ll. 10-14;
and page 44, l. 12.
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