73599670
May 19, 1986
Apr 21, 1987
CHEMICAL AGENTS FOR USE IN THE MINING INDUSTRY FOR THE TREATMENT OF ORES BY FLOTATION PROCESS; NAMELY, COLLECTORS, PROMOTERS, STABILIZERS, DEPRESSANTS, FROTHERS, DEFOAMERS, FLOCCULANTS, DISPERSING AGENTS, AGGLOMERATING AGENTS, FILTERING AIDS
Chemicals