US PATENT SUBCLASS 96 / 101
CHROMATOGRAPHY TYPE APPARATUS

Current as of: June, 1999
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96 /   HD   GAS SEPARATION: APPARATUS

101CHROMATOGRAPHY TYPE APPARATUS {6}
102  DF  .~> With control means responsive to sensed condition
103  DF  .~> With programmed, cyclic, or time responsive control means
104  DF  .~> Plural separate and distinct stages
105  DF  .~> Including injection system or inlet fluid distributor
106  DF  .~> Having system connector or coupling
107  DF  .~> Having imbedded baffle or flow distributor

DEFINITION

Classification: 96/101

CHROMATOGRAPHY TYPE APPARATUS:

(under the class definition) Apparatus comprising a column containing (a) a liquid, known as the "stationary liquid phase," supported by a base of solid material to successively sorb therein the different gases in a plurality of gases or (b) a solid sorbent to successively sorb thereon the different gases in a plurality of gases with or without subsequently successively eluting or displacing the sorbed gases with a gas which is inert with respect to the sorbed gases and sorbent.

(1) Note. The plurality of gases is usually allowed to flow slowly through a column of sorbent. Different gases will pass at different speeds through the column and will eventually be separated into zones. The zones can be eluted by passing an inert gas through the column and collecting the various fractions.

(2) Note. Use of a liquid supported by a base of solid material for the separation of mixture of gases is known as "gas-liquid chromatography" or "GLC." Use of a solid sorbent without a liquid phase present is known as "gas-solid chromatography." Other terms used when referring to chromatography type apparatus include: "gas chromatography" or "GC," "vapor-phase chromatography" or "VPC," "gas-liquid partition chromatography," "vapor fractometry," "capillary column gas chromatography" or "CC-GC," and "partition chromatography."

(3) Note. Sometimes a "carrier" gas is mixed with or used to propel a plurality of gases to be separated through the chromatography apparatus.

(4) Note. The plurality of gases to be separated may be obtained by vaporizing a liquid. The liquid that is injected into the chromatography column is vaporized, and then the resulting vapors are separated in the chromatography column.

SEE OR SEARCH THIS CLASS, SUBCLASS:

108+, for solid sorbent apparatus of a more general nature used to sorb gases or liquids from a gas phase. SEE OR SEARCH CLASS

73, Measuring and Testing,

19.02, 23.22+, and 23.35+ for chromatography processes including analysis of eluted or displaced gas.

95, Gas Separation: Processes,

82+, for chromatography processes.

210, Liquid Purification or Separation,

198.2+, for apparatus and subclasses 635 and 656+ for processes for the purification or separation of liquids using chromatography.

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

89, for gas chromatography apparatus involving chemical reaction and associated with an analyzer, structured indicator, or manipulative laboratory device.