US PATENT SUBCLASS 196 / 14.5
DEWAXING
Current as of: June, 1999
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DEFINITION
Classification: 196/14.5
(under the class definition) Apparatus for separating wax from a petroleum oil to either recover the wax or purify the oil.
(1) Note. Most of the patents in this subclass include apparatus for solvent treating the oil combined with some additional step such as chilling, or apparatus for sweating the oil out of the wax.
SEE OR SEARCH THIS CLASS, SUBCLASS:
14.52, for apparatus for separating mineral oils by solvent extraction. Apparatus for separation of wax from mineral oil by solvent extraction is in this subclass (14.5).
46, for apparatus for separating impurities or nonmineral materials from mineral oils.
SEE OR SEARCH CLASS
62, Refrigeration, appropriate subclass, for refrigeration processes and apparatus even though employed for separating wax from mineral oil. 100, Presses, appropriate subclasses, for presses not elsewhere provided for. Note particularly
104, for presses having a drain duct or channel for liquid expressed from the material pressed.
208, Mineral Oils: Processes and Products,
24, for processes of separating paraffin waxes from mineral oils.
210, Liquid Purification or Separation, appropriate subclasses, especially
175, and 774 for separating processes and apparatus involving the use of heaters or coolers.
494, Imperforate Bowl: Centrifugal Separators, appropriate subclasses for a separator of that class, as explained is the
search note to that class appearing in the definition of this class (196).
