US PATENT SUBCLASS 209 / 213
.~ Paramagnetic

Current as of: June, 1999
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209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

*  DD  MAGNETIC {2}
213.~ Paramagnetic {9}
214  DF  .~.~> Processes
215  DF  .~.~> Special application
216  DF  .~.~> Multiple type
217  DF  .~.~> Reciprocating magnets
*  DD  .~.~> Rotating magnets {4}
223.1  DF  .~.~> Stationary magnets {2}
225  DF  .~.~> With agitating or conveying {1}
228  DF  .~.~> Discharging {1}
231  DF  .~.~> Feeding {1}

DEFINITION

Classification: 209/213

Methods and means under Magnetic employing magnetic attraction to separate material responsive to the attraction from other materials not responsive to such attraction or responsive in lesser degree.

(1) Note. This subclass takes cases which are not classifiable in the subclasses indented thereunder.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12.1+, particularly subclasses 38-40, for paramagnetic separation combined with other separating operations classifiable in this class (Class 209).

562, for a magnetic means delaying actuation of a means separating special items.

567+, for a magnetic test sensing a property of special items to be sorted.

639, for means sorting special items by use of a magnet.

SEE OR SEARCH CLASS 204, Chemistry: Electrical and Wave Energy,

554+, for electrical (e.g., electrostatic, etc.) or simultaneous electrical and magnetic separation or purification of liquids or magnetic treatment of liquids (other than separation) and subclasses 660+ for corresponding apparatus.

210, Liquid Purification or Separation,

222+, for processes and apparatus for applying a magnetic field to a liquid to separate particles therefrom for the disclosed purpose of clarifying the liquid.

414, Material or Article Handling,

606, 737, 793.2+, and 797.1 for a device of that class which may include a magnet.

588, Hazardous or Toxic Waste Destruction or Containment, appropriate subclasses using magnetic force in destroying or containing hazardous or toxic waste.