US PATENT SUBCLASS 429 / 338
.~.~.~.~.~ The hetero ring is a cyclic carbonate (e.g., ethylene carbonate, propylene carbonate, etc.)

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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}
188  DF  .~ Include electrolyte chemically specified and method {11}
324  DF  .~.~ Chemically specified organic solvent containing {6}
336  DF  .~.~.~ Hetero ring in the organic solvent {1}
337  DF  .~.~.~.~ Oxygen is the only ring hetero atom in the hetero ring (e.g., dioxolane, gamma butyrolactone, etc.) {1}
338.~.~.~.~.~ The hetero ring is a cyclic carbonate (e.g., ethylene carbonate, propylene carbonate, etc.)

DEFINITION

Classification: 429/338

The hetero ring is a cyclic carbonate (e.g., ethylene carbonate, propylene carbonate, etc.):

(under subclass 337) Subject matter wherein the oxygen containing hetero ring is a cyclic carbonate in which the hetero ring contains as part of its structure a -O-C(=O)-O- group (e.g., propylene carbonate, ethylene carbonate, butylene carbonate, etc.).

SEE OR SEARCH THIS CLASS, SUBCLASS:

342, for a linear carbonate.