Appeal No. 1998-1214 Page 2
Application No. 08/701,188
understanding of the invention can be derived from a reading
of exemplary claim 1, which
is reproduced below.
1. A fuel for
internal combustion
engines containing detergent-
effective and dispersan
t-effective amounts of
compounds of formulae Ia and Ib
500 to 5,000 and in each of the two formulae one of the
radicals X is OH and the other is the group
where the radicals R may be identical or different and are
1
each hydrogen, alkyl, hydroxyalkyl or aminoalkyl which may be
substituted by further hydroxyl- or amino-carrying alkyl
radicals, or the two radicals R may form a nonaromatic ring.
1
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
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