US PATENT SUBCLASS 210 / 257.2
.~.~ Having membrane

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

252  DF  SERIALLY CONNECTED DISTINCT TREATING WITH OR WITHOUT STORAGE UNITS {7}
257.1  DF  .~ With storage unit {1}
257.2.~.~ Having membrane

DEFINITION

Classification: 210/257.2

Having membrane:

(under subclass 257.1) Apparatus constructed with a filtering means composed of a thin, enveloping or lining substance, i.e., membrane.

SEE OR SEARCH THIS CLASS, SUBCLASS:

96.2, for a membrane in an apparatus with constituent mixture variation responsive.

348+, for apparatus which uses a semipermeable septum which does not provide for continuous streams on both sides of the septum.

433+, for similar apparatus which uses an ordinary filter

septum.

500.1, for a membrane, per se.

541, for membrane supports, frames, and spaces. 634+, for process of using a septum selective as to composition.

SEE OR SEARCH CLASS

127, Sugar, Starch, and Carbohydrates,

10, for a sugar solution dialyzer.

204, Chemistry: Electrical and Wave Energy,

252+, for a similar device using an electric current.

604, Surgery,

4+, for drawing blood from the body, treating the blood, and returning it the body.