| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 01.00 |
| PATENT ASSIGNEE | Cabot |
| PATENT CLAIMS | Process comprising treat Cs alum with slaked lime or CaCO3 & acid or salt of said acid to produce a Cs salt of said acid, wherein said Cs salt includes Ca ions & sulfate ions as impurities; & adding Ba(OH)2 to soln of said Cs salt in amount sufficient to precipitate sulfate ion contg compds to provide Cs salt having < 0.5% sulfate ion |
| PATENT PHOTOCOPY | Available on request |
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