Inventor

HIRAKAWA SEISHIRO

2 patents

Patents

2 patents

US4028211AJun 7, 1977

Apparatus for automatically replacing electrodes used for electrolytic refining of metal

MITSUI MINING & SMELTING CO24 citations73

US4026776AMay 31, 1977

Method for producing high purity lead

MITSUI MINING & SMELTING CO12 citations62