| PATENT ASSIGNEE'S COUNTRY | Japan |
| PATENT ASSIGNEE | Mitsui Mining & Smelting (Tokyo) |
| PATENT CLAIMS |
Mfg method - Mixing, with stirring, an aq soln of cerous nitrate with base in such a mixing ratio that the pH value of mixt 5-10 - Rapidly heating mixt to 70-100C - Maturing mixt at T to form fine grains |
| PATENT PHOTOCOPY | Available on request |
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