Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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B01J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
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38/00
Regeneration or reactivation of catalysts, in general
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B01J38/04
Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst
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B01J38/12
Treating with free oxygen-containing gas
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B01J38/20
Plural distinct oxidation stages
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