Appeal No. 1998-1664
Application No. 08/323,982
75 through 77, 81 through 83, 101, and 102. These are the
only claims remaining in the application.1
The subject matter on appeal relates to an overbased
metal salt of an acidic material which is useful as a
lubricant additive. (Appeal brief, page 2.) Further details
of this appealed subject matter are recited in representative
claims 1, 23, and 28 reproduced below:
1. An overbased metal salt of an acidic
material selected from the group consisting of
(a) hydrocarbyl-substituted carboxyalkylene-
linked phenols,
(b) dihydrocarbyl esters of alkylene
dicarboxylic acids, the alkylene group being
substituted with a hydroxy group and an additional
carboxylic acid group, and
(c) alkylene-linked polyaromatic molecules, the
aromatic moieties whereof comprise at least one
hydrocarbyl-substituted phenol and at least one
carboxy phenol;
the hydrocarbyl group or groups of said acidic
material being of sufficient length to provide oil
solubility to the salt;
wherein the overbased metal salt has a metal
ratio of at least 1.3.
1Subsequent to the final Office action of January 6,
1997, the appellants filed an amendment under 37 CFR § 1.116
(1981) on March 24, 1997, proposing the cancellation of non-
elected claims 9 through 18, 22, 24 through 27, 34 through 43,
48 through 50, 63 through 74, 78 through 80, and 84 through
100. According to the examiner, this amendment has been
entered. (Examiner’s answer, page 2.)
2
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