Appeal No. 1997-2263
Application No. 08/266,388
THE INVENTION
Appellants claim a process for inhibiting the formation of
solid hydrocarbon incrustations from hydrocarbon mixtures by
adding to the hydrocarbon mixtures a recited inhibitor mixture.
Claim 12 is illustrative and reads as follows:
12. The process of inhibiting the formation of solid
hydrocarbon incrustations from hydrocarbon mixtures which are
fluid and prone to form such incrustations, comprising
contacting said hydrocarbon mixtures with an inhibitor mixture
comprising
(a) esters of phosphoric acid or salts thereof and alkoxylated
aliphatic, cycloaliphatic or aromatic alcohols, and
(b) fatty acid oligo-dialkanolamides.
THE REFERENCES
Walton 4,813,482 Mar. 21, 1989
Sugier et al. (Sugier) 4,973,775 Nov. 27, 1990
THE REJECTION
Claims 12-32 stand rejected under 35 U.S.C. § 103 as being
unpatentable over Walton in view of Sugier.
OPINION
We have carefully considered all of the arguments advanced
by appellants and the examiner and agree with appellants that
the aforementioned rejection is not well founded. Accordingly,
we reverse this rejection.
2
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007