(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.
