Method for purifying lithium sulfide

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method

Reexamination Certificate

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C429S321000, C429S304000, C429S188000, C429S189000

Reexamination Certificate

active

08084160

ABSTRACT:
A method of purifying lithium sulfide wherein lithium sulfide obtained by reacting lithium hydroxide with hydrogen sulfide in an aprotic organic solvent is washed with an organic solvent at a temperature of 100° C. or higher. Impurities contained in lithium sulfide can be reduced by the method of purification.

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English transation of JP 07330312 (cited by applicants on IDS).
Database WPI Week 199727 Derwent Publications Ltd., London, GB; AN 1997-294617 XP002480255 & JP 09 110404 A (Furukawa Kikai Kinzoku KK) Apr. 28, 1997 (Abstract).
Office Action issued Dec. 15, 2010, in Japan Patent Application No. 2005-514938 (with partial English translation).
Office Action issued May 13, 2011 in Taiwan Patent Application No. 093132259.

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