US PATENT SUBCLASS 203 / 2
.~ Of temperature or pressure


Current as of: June, 1999
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203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

1  DF  WITH MEASURING, TESTING OR INSPECTING {2}
2.~ Of temperature or pressure


DEFINITION

Classification: 203/2

(under subclass 1) Processes directed to specifically determining the temperature and/or pressure of the feed, vapor, residue or condensate.

SEE OR SEARCH CLASS

73, Measuring and Testing, appropriate subclasses for device for quantitatively measuring temperature and 700+ for a device for the direct measurement of pressure.

137, Fluid Handling,

2+, for a process of fluid handling in which one or more characteristics or conditions of a fluent material are determined, particularly subclass 14 for a process involving pressure control.

202, Distillation: Apparatus,

160, for a separatory distillation system including a column provided with automatic temperature and/or pressure control, and see "SEARCH THIS CLASS, SUBCLASS" and "SEARCH CLASS" thereunder for related fields of search. 260, Chemistry of Carbon Compounds,

700, for a process directed to temperature control.

374, Thermal Measuring and Testing,

100+, for a device for quantitatively determining temperature.

585, Chemistry of Hydrocarbon Compounds,

956, for a collection of patents concerned with condition-responsive control procedures in hydrocarbon purification processes.