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C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
C01B13/14—Methods for preparing oxides or hydroxides in general
C01B13/36—Methods for preparing oxides or hydroxides in general by precipitation reactions in aqueous solutions
C01B13/363—Mixtures of oxides or hydroxides by precipitation
C—CHEMISTRY; METALLURGY
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22C—ALLOYS
C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
G—PHYSICS
G07—CHECKING-DEVICES
G07F—COIN-FREED OR LIKE APPARATUS
G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
G07F17/14—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for fastenings for doors; for turnstiles