505 / | HD | SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS |
300 | DF | PROCESSES OF PRODUCING OR TREATING HIGH TEMPERATURE (Tc GREATER THAN 30 K) SUPERCONDUCTOR MATERIAL OR SUPERCONDUCTOR CONTAINING PRODUCTS OR PRECURSORS THEREOF {24} |
461 | .~ Producing halogen [i.e., fluorine (Fl), chlorine (Cl), bromine (Br), or astatine (At)], containing superconductor |