73655394
Apr 15, 1987
Jan 16, 1990
CHEMICAL MATERIALS FOR FILTERING, NAMELY-RAW AND PARTLY PREPARED INORGANIC METAL OXIDES FOR USE IN SEPARATION AND PURIFICATION OF SOLIDS FROM LIQUIDS, LIQUIDS FROM LIQUIDS, GASES FROM LIQUIDS, AND GASES FROM GASES, FOR USE IN SEPARATION INDUSTRIES; AND CHEMICAL SUPPORTING MATERIALS FOR CATALYSTS, NAMELY-MICROPOROUS METAL OXIDES
Chemicals