US PATENT SUBCLASS 204 / 554
.~ Electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation)

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

*  DD  PROCESSES AND PRODUCTS {7}
554.~ Electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation) {7}
555  DF  .~.~> With control responsive to sensed condition
556  DF  .~.~> With measuring, testing, or sensing
557  DF  .~.~> Using magnetic field
558  DF  .~.~> With simultaneous use of liquid-liquid extraction solvent
559  DF  .~.~> Predominantly hydrocarbon {2}
571  DF  .~.~> Removing solids {1}
573  DF  .~.~> Resolving emulsion or dispersion

DEFINITION

Classification: 204/554

Electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation):

(under the class definition) Process involving (a) electrical (including simultaneous electrical and magnetic) separation or purification of a liquid or (b) magnetic treatment, per se, when some effect other than mere separation is desired or produced.

(1) Note. This subclass and the subclasses indented hereunder primarily provide for electrostatic separation of a liquid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

155+, for processes of producing a compound or element by chemical reaction brought about by electrical or wave energy in a magnetic field, except processes involving electrolysis or in which chemical reaction is brought about by the mere heating effect of electrical or wave energy.

450+, for electrophoresis or electro-osmosis processes.

660+, for corresponding apparatus.

SEE OR SEARCH CLASS 95, Gas Separation: Processes,

2+, and 57+ for electric field separation of gaseous mixtures (including degasifying of liquid) without involving chemical reaction to convert one or more constituents to other compounds; but simultaneous or sequential combinations of electrical degasification of a liquid with other electrical separation of a liquid are provided for in Class 205 when electrolysis is involved or in Class 204 when electrolysis is not involved (this remains true for placement of such combined processes regardless of whether a chemical reaction is or is not involved).

205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, for electrolytic processes.

208, Mineral Oils: Processes and Products, for processes of purifying mineral oils (including removing water) without using electrical or wave energy (other than mere electrical heating which is provided for in Class 208) and as long as more than mere physical separation (provided for in Class 210,

767+, ) is involved. Also, see the line notes above and below drawn to Classes 205 and 210 for other loci providing for processes of treating emulsions or dispersions. And see Class 516 for discussion of the placement of colloid systems (e.g., emuision, dispersion, gels) in the US Patent

Classification System.

210, Liquid Purification or Separation,

748, for general purification or separation of a liquid, especially water or waste water, utilizing electrical or wave energy (except the type provided for in Classes 204 or 205, unless (1) the Class 204 or Class 205 process is merely used to produce a reagent employed in a process otherwise provided for in Class 210 above subclasses 767+ (e.g., electrolytic production of free chlorine in salt water which is employed to sterilize the salt water under treatment, etc.) or (2) the 204 or 205 type process includes at least one separate step provided for in Class 210 above subclasses 767+ and except for general disinfecting, preserving, deodorizing, or sterilizing (as provided for in Class 422, subclasses 1+) of a medium other than liquid water or waste water (e.g., Class 210, subclass 748, provides for the use of ultraviolet light to sterilize, and therefor purify, liquid water, etc.)); and appropriate other subclasses for breaking or coalescing of oil/water emulsions which may involve the use of a magnetic field, but without using an electric field. Also, see the line notes above drawn to Classes 205 and 208 for other loci providing for processes of treating emulsions or dispersions. And see Class 516 for discussion of the placement of colloid systems (e.g., emulsion, dispersion, gels) in the US Patent Classification System.

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

1+, for general disinfecting, preserving, deodorizing or sterilizing, especially subclasses 20, 21, and 22+ for disinfecting, preserving, or sterilizing using electrical or wave energy in a way not provided for in another class (e.g., electrostatic sterilizing (involving a chemical reaction) of a gas, etc.).

435, Chemistry: Molecular Biology and Microbiology, for a process or apparatus involving measuring or testing by electrical or wave energy which is separate and apart, but in combination with a process or apparatus for use with a viable micro-organism or a catalytically active enzyme; and for a process or apparatus involving electrical or wave energy treatment of a micro-organism or an enzyme when the treatment is solely disclosed for use with a viable micro-organism or a catalytically active enzyme.

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, appropriate subclasses for subject matter relating to: colloid systems (such as sols*, emulsions, dispersions, foams, aerosols, smokes, gels, or pastes) or wetting agents (such as leveling, penetrating, or spreading); subcombination compositions of colloid systems containing at least an agent specialized and designed for or peculiar to use in making or stabilizing colloid systems; compositions and subcombination compositions specialized and designed for or peculiar to use in breaking (resolving) or inhibiting colloid systems; processes of making the compositions or systems of the class; processes of breaking (resolving) or inhibiting colloid systems; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art; when without using electrical or wave energy.