US PATENT SUBCLASS 204 / 555
.~.~ With control responsive to sensed condition

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

*  DD  PROCESSES AND PRODUCTS {7}
554  DF  .~ Electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation) {7}
555.~.~ With control responsive to sensed condition

DEFINITION

Classification: 204/555

With control responsive to sensed condition:

(under subclass 554) Process in which the separation or purification is regulated by detecting a characteristic or a change in a characteristic of the process and by implementing an action in the process based upon the detected characteristic or change therein.

(1) Note. In this subclass and the subclasses indented hereunder a single means may be used both to detect a characteristic or a change in a characteristic of the process and to implement an action in the process based upon the detected characteristic or change therein. There must be a positive action made by a control means because of the detected characteristic or change therein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

556, for electrical separation or purification of liquid with measuring, testing, or sensing; but without control responsive to sensed condition.

661, for corresponding apparatus.

SEE OR SEARCH CLASS

73, Measuring and Testing, as the residual class for processes and apparatus for measuring or testing, per se. See also the (3) Note in the class definition of Class 73 for additional loci of other measuring and testing processes and apparatus of different types.

324, Electricity, Measuring and Testing, for measuring, testing, or sensing, per se, to determine electrical properties by electrical means even though nonelectrical values may be derived from the electrical properties determined.