US PATENT SUBCLASS 208 / 401
.~ Including a test or measurement


Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

400  DF  BY TREATMENT OF SOLID MINERAL, E.G., COAL LIQUEFACTION, ETC. {13}
401.~ Including a test or measurement


DEFINITION

Classification: 208/401

Including a test or measurement:

(under subclass 400) Subject matter in which the process includes a step of testing or measuring any parameter involved in the procedure.

(1) Note. Merely abiding by a specified parameter, e.g., operating at a prescribed temperature range in performing the process, is not considered measuring or testing.

(2) Note. Included in the subclass are those processes wherein a step is controlled in response to the result of a test or measurement.

SEE OR SEARCH CLASS

73, Measuring and Testing, appropriate subclasses, for certain measuring and testing processes, per se, and the notes to the main class definition thereof for the locus of other measuring and testing processes.