Appeal No. 2000-0057
Application 08/748,053
THE INVENTION
The appellants’ claimed invention is directed toward
acid-containing cleaning compositions. Claims 1 and 41 are
illustrative:
1. An acid cleaner composition comprising:
a) an effective amount of an acid component comprising at
least 5 wt% of a normally liquid acid and at least 5 wt% of a
normally solid acid, the total weight of both acids are at
least 10 wt%; wherein the normally solid acid is a solid at a
temperature less than about 40EC and the normally liquid acid
is a liquid at a temperature of less than about 40EC;
b) an effective soil suspending amount of a surfactant
composition;
c) an effective solidifying amount of a urea compound;
and
d) water in an amount of about 1 part water per each 1 to
6 parts urea; wherein the solid block cleaner composition is
solidified and held within a disposable plastic container.
41. An acid cleaner composition comprising:
a) an effective amount of an acid component comprising:
i) about 5 to 40 wt% of phosphoric acid;
ii) about 2 to 20 wt% of citric acid; and
iii) about 5 to 25 wt% of sulfamic acid;
wherein the total weight of the acids are at least 10 wt%
of the acid cleaner;
2
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