US PATENT SUBCLASS 202 / 182
.~.~.~.~ With vapor-treating devices

Current as of: June, 1999
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202 /   HD   DISTILLATION: APPARATUS

81  DF  APPARATUS {4}
82  DF  .~ Systems {6}
152  DF  .~.~ Separatory {3}
163  DF  .~.~.~ Still {13}
182.~.~.~.~ With vapor-treating devices {7}
183  DF  .~.~.~.~.~> Still and absorber {1}
185.1  DF  .~.~.~.~.~> Condenser {10}
197  DF  .~.~.~.~.~> With separator
198  DF  .~.~.~.~.~> Dephlegmator
199  DF  .~.~.~.~.~> Doubler
200  DF  .~.~.~.~.~> Filter
201  DF  .~.~.~.~.~> Aerator

DEFINITION

Classification: 202/182

Patents for apparatus directed to physical treatment of the distillate, such as filtering, dephlegmating, washing, absorbing, or condensing, when in combination with the elements of or limited to being a part of a distilling system. Apparatus for treatment of the volatiles from thermolytic distilling, unless provided for under thermolytic apparatus, is included here.

(1) Note. For filters, see Search Notes below.

(2) Note. For condensers see Search Notes below.

(3) Note. For washers see Search Notes below.

SEE OR SEARCH CLASS

55, Gas Separation, subclasses following

474, for filters; subclass 220 and appropriate indented subclasses for washers.

196, Mineral Oils: Apparatus,

146, for washers; subclass 46.1 for filters; subclasses 138+, for condensers;

210, Liquid Purification or Separation,

348+, for filters.

261, Gas and Liquid Contact Apparatus,

19, and 75 for washers; subclasses 76, 78.1 and 115, for condensers.