US PATENT SUBCLASS 429 / 135
.~.~.~.~.~ With layer of material or spacing means

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


429 /   HD   CHEMISTRY: ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT, AND PROCESS

122  DF  CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS {16}
129  DF  .~ Separator, retainer or spacer insulating structure (other than a single porous flat sheet, or either an impregnated or coated sheet not having distinct layers) {4}
131  DF  .~.~ Having electrode enclosing feature {4}
133  DF  .~.~.~ Cylindrical unit cell type, flat unit cell type or porous cup type {1}
134  DF  .~.~.~.~ Paste or gel {1}
135.~.~.~.~.~ With layer of material or spacing means

DEFINITION

Classification: 429/135

(under subclass 134) Apparatus having a layer of material or spacing means which either supports the paste material, retains an active material in position, or physically separates opposing electrodes.