Patent classifications
C
CHEMISTRY; METALLURGY
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C01
INORGANIC CHEMISTRY
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C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
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C01F7/78
Compounds containing aluminium, with or without oxygen or hydrogen, and containing two or more other elements
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C01F7/786
containing, besides aluminium, only anions, e.g. Al[OH]xCly[SO4]z
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