US PATENT SUBCLASS 204 / 295
.~.~.~ Diaphragms

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

193  DF  APPARATUS {5}
194  DF  .~ Electrolytic {11}
279  DF  .~.~ Elements {3}
295.~.~.~ Diaphragms {1}
296  DF  .~.~.~.~> Organic

DEFINITION

Classification: 204/295

(under subclass 279) Apparatus in which the element is a diaphragm constructed for the performance of any of the electrolytic processes of this class.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

500.21, (2) Note for the lines between this class (204) and other classes with respect to membranes defined by composition.

429, Chemistry: Electrical Current Producing Apparatus, Product and Process,

248+, for diaphragms specialized for batteries.