US PATENT SUBCLASS 429 / 330
.~.~.~.~.~.~ The hetero ring is a cyclic carbonate

Current as of: June, 1999
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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}
326  DF  .~.~.~ Plural organic solvents (i.e., solvent mixture) {1}
327  DF  .~.~.~.~ One of the organic solvents contains a hetero ring {2}
329  DF  .~.~.~.~.~ Oxygen is ring member of the hetero ring {2}
330.~.~.~.~.~.~ The hetero ring is a cyclic carbonate {3}
331  DF  .~.~.~.~.~.~.~> Plural cyclic carbonate solvents
332  DF  .~.~.~.~.~.~.~> And acyclic carbonate or acyclic carboxylic acid ester solvent
333  DF  .~.~.~.~.~.~.~> And acyclic ether solvent

DEFINITION

Classification: 429/330

The hetero ring is a cyclic carbonate:

(under subclass 329) Subject matter wherein the hetero ring having oxygen as a ring member is a cyclic carbonate.

(1) Note. A cyclic carbonate is a ring which has the grouping -O-C(=O)O- as part of the ring.

(2) Note. Examples of cyclic carbonates are butylene carbonate, a seven-membered ring, and propylene carbonate, a six-membered ring.