Cyprus Foote Mineral Company

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5679850 Lithium diisapropylamideExpiredOct 22, 96Oct 21, 97[C07C]
5262080 Lithium alkoxide reagent compositionsExpiredJul 30, 91Nov 16, 93[C09K]
5219550 Production of low boron lithium carbonate from lithium-containing brineExpiredDec 06, 90Jun 15, 93[C01D]
5196138 Preparation of mixed lithium amide reagentsExpiredOct 11, 89Mar 23, 93[C09K]
5173209 Stable lithium cycloalkylimidesExpiredSep 13, 90Dec 22, 92[C09K]
5149457 Stable mixed lithium amide reagent compositionsExpiredJun 30, 89Sep 22, 92[C09K]
5068368 Stabilized lithium acetylide and reactions therewithExpiredMay 10, 90Nov 26, 91[C07F, C07C, C07J]
4980136 Production of lithium metal grade lithium chloride from lithium-containing brineExpiredJul 14, 89Dec 25, 90[B01D, C01D]
4867956 Active oxygen-rich compound and preparative methodExpiredMar 01, 88Sep 19, 89[C01B]

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