US PATENT SUBCLASS 205 / 523
.~.~.~.~.~.~.~ Diaphragm or membrane having a specified porosity


Current as of: June, 1999
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205 /   HD   ELECTROLYSIS: PROCESSES, COMPOSITIONS USED THEREIN, AND METHODS OF PREPARING THE COMPOSITIONS

334  DF  ELECTROLYTIC SYNTHESIS (PROCESS, COMPOSITION, AND METHOD OF PREPARING COMPOSITION) {21}
464  DF  .~ Preparing inorganic compound {9}
477  DF  .~.~ Metal containing compound produced {11}
508  DF  .~.~.~ Hydroxide {2}
510  DF  .~.~.~.~ Alkali metal containing {3}
516  DF  .~.~.~.~.~ And elemental halogen produced {4}
517  DF  .~.~.~.~.~.~ Utilizing structurally defined diaphragm or membrane or diaphragm or membrane other than nonstructurally defined single layer cation exchange membrane having single-type cation exchange groups (e.g., anion exchange membrane, etc.) {7}
523.~.~.~.~.~.~.~ Diaphragm or membrane having a specified porosity


DEFINITION

Classification: 205/523

Diaphragm or membrane having a specified porosity:

(under subclass 517) Subject matter wherein a diaphragm or membrane having a specified porosity is utilized during synthesis.

(1) Note. This subclass does not include a diaphragm or membrane which broadly states that it is porous without giving a specific pore size or range.