US PATENT SUBCLASS 507 / 141
.~.~ Inorganic component contains soluble potassium salt
Current as of:
June, 1999
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507 /
HD
EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY
100
DF
EARTH BORING
{4}
140
DF
.~ Contains inorganic component other than water or clay {5}
141
.~.~ Inorganic component contains soluble potassium salt
DEFINITION
Classification: 507/141
Inorganic component contains soluble potassium salt:
(under subclass 140) Composition wherein the inorganic component contains a potassium ion which is soluble in the boring medium.
(1) Note. The composition of this subclass must contain potassium ion other than as a mere component in a normal seawater brine.
SEE OR SEARCH THIS CLASS, SUBCLASS:
145, for a composition containing normal seawater brine without the addition of any of the components proper for subclasses 100 through 144.
