US PATENT SUBCLASS 208 / 24
PARAFFIN WAX; TREATMENT OR RECOVERY

Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

24PARAFFIN WAX; TREATMENT OR RECOVERY {4}
25  DF  .~> With ureas
26  DF  .~> With sorption agents
27  DF  .~> Chemical treatment (refining or modification except mere solvent extraction)
28  DF  .~> Separation of paraffin from oil (e.g., dewaxing) {4}

DEFINITION

Classification: 208/24

(under the class definition) Processes for the treatment, preparation, separation or purification of paraffin waxes wherein the product retain its identity as a wax.

(1) Note. Paraffin waxes are the colorless mixtures of solid hydrocarbons of the paraffin series. Petrolatum which is composed of a mixture of heavy residual oils and paraffin wax is considered a paraffin wax.

SEE OR SEARCH THIS CLASS, SUBCLASS:

46+, for the conversion of paraffin wax to another mineral oil nonwax product.

SEE OR SEARCH CLASS

196, Mineral Oils: Apparatus, 14.5, for apparatus for separating paraffin wax from a nonwaxy mineral oil.

210, Liquid Purification or Separation, appropriate subclass for apparatus for purifying paraffin waxes by filtration, decantation or dialysis, not combined with a treatment of the wax provided for in this class (208).

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing, appropriate subclasses for apparatus for treating paraffin waxes with chemicals.