US PATENT SUBCLASS 436 / 40
.~ In petroleum oil, hydrocarbon oil or organic fluid

Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

39  DF  DETERMINATION OF WATER {3}
40.~ In petroleum oil, hydrocarbon oil or organic fluid

DEFINITION

Classification: 436/40

In petroleum oil, hydrocarbon oil, or organic fluid:

(under subclass 39) Processes or compositions for the determination of water in petroleum oil, hydrocarbon oil, or organic fluid.

(1) Note. See subclass 60 for further search notes relating to oil testing.

SEE OR SEARCH CLASS

73, Measuring and Testing

19.01+, for the detection of a hydrocarbon gas in seawater; subclasses 23.2+ for a prospecting method for hydrocarbons; subclasses 61.43+ for detection of oil or hydrocarbon in water, and subclasses 152.01 for bore hole and drilling study.