US PATENT SUBCLASS 324 / 204
.~ Fluid material examination


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



324 /   HD   ELECTRICITY: MEASURING AND TESTING

200  DF  MAGNETIC {24}
204.~ Fluid material examination


DEFINITION

Classification: 324/204

Fluid material examination:

(under subclass 200) Subject matter which includes a magnetic field in which a gas or liquid material is placed for examination by the magnetic field, the apparatus to sense and indicate being responsive to the field modified by the gas or liquid material to give an indication of some property of the material examined.

(1) Note. Particles may be entrained in the gas or liquid examined magnetically in this subclass.

SEE OR SEARCH CLASS

23, Chemistry: Physical Processes,

232+, for gas analysis processes.

73, Measuring and Testing,

23+, for gas analysis, particularly subclass 27 for

paramagnetic gas analysis by magnetic and thermal means, and subclass 194 for magnetic induction type flow meters. 95, Gas Separation: Processes,

27, and 28 for processes of gas separation using magnetism.

96, Gas Separation: Apparatus,

1+, for magnetic separation means for gas separation.

209, Classifying, Separating, and Assorting Solids,

38, 40 for the magnetic separation of a solid from a solid, liquid, or a gas combined with another type of separation, and subclass 232 for the separation of a solid from a solid or liquid magnetically when in a fluid suspension.

210, Liquid Purification or Separation,

695, for processes of precipitation of a solid from a liquid by magnetic means, and subclasses 222+ for apparatus to magnetically treat material under the class definition.

250, Radiant Energy,

306, for the inspection of liquids by electrically charged particles, subclasses 343+ for the infrared examination of contained fluent material, subclass 356.1 for flow metering by radiant energy apparatus, subclass 357.1 for fluent material level examination by radiant energy, subclasses 373+ for the ultraviolet examination of contained fluent material, subclasses 383+ for the examination of emissive fluent type or radiation transmissive fluent material by ionized gas-type detector, subclasses 428+ for fluent material containment, support, or transfer means combined with radiant energy treatment, subclasses 564+ for photocell sensing of fluent material, and subclasses 573+ for optical or prephotocell systems to sense fluent material by photoelectric means.

356, Optics: Measuring and Testing,

70, for oil testing by visible light; subclass 398 for the inspection of container content by light; subclasses 409+ for color transmission testing of fluids; and subclasses 441+ for the examination of liquid particle suspensions by visible light. 422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

83+, for analysis of apparatus involving a chemical reaction.