US PATENT SUBCLASS 48 / 198.3
.~.~ With specified treatment of converted product, e.g., purification, particular cooling, testing, etc.


Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

197 R  DF  PROCESSES {15}
198.1  DF  .~ Manufacture from methane (natural gas) {6}
198.3.~.~ With specified treatment of converted product, e.g., purification, particular cooling, testing, etc.


DEFINITION

Classification: 48/198.3

With specified treatment of converted product, e.g., purification, particular cooling, testing, etc.:

(under subclass 198.1) Subject matter in which the gaseous product of the process is subjected to a further treatment which does not change the chemical nature of the finished desired product.

SEE OR SEARCH CLASS

62, Refrigeration, appropriate subclasses for a process for purifying or separating gas compositions via the liquefaction

or solidification of normally gaseous materials.

73, Measuring and Testing, for testing methods in general, and the main class definition thereto for a directory of other loci for the testing art.

95, Gas Separation: Processes, appropriate subclasses for processes, per se, for the separation of gas from a fluid mixture.

165, Heat Exchange, for cooling methods and apparatus, in general.

423, Chemistry of Inorganic Compounds, 210+, for gas purification by a method involving a chemical reaction.