Appeal No. 97-2089
Application No. 08/097,801
The subject matter on appeal relates to a method for
reducing or preventing foaming occurring during the production
of chemical compositions consisting essentially of the
addition to the chemical composition of an effective
antifoaming amount of paraffinic oil having certain
characteristics. This appealed subject matter also relates to
a concentrate which contains the aforementioned paraffinic
oil. This subject matter is adequately illustrated by claims
13 and 16 which read as follow:
13. A method for reducing or preventing foaming occurring
during the production of chemical compositions consisting
essentially of the addition to the chemical composition of an
effective antifoaming amount of paraffinic oil having an
average molecular weight of from about 100 to 200, and a
density at 15EC of 0.75 to 0.80 kg/1, and containing about 45%
to 100% mass by mass of at least one paraffinic hydrocarbon.
16. An adjuvant concentrate which contains an adjuvant
and a paraffinic oil as specified in claim 13.
The reference relied upon by the examiner as evidence of
obviousness is:
Alexander 4,221,600 Sep. 9, 1980
All of the claims on appeal are rejected under 35 U.S.C.
§ 103 as being unpatentable over Alexander.2
2On page 2 of the brief, the appellants have indicated
that method claims 13 through 15 are grouped separately from
2
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