Inventor

NIWANO MASARU

JP3 patents

Patents

3 patents

US5116437AMay 26, 1992

Method for stabilization treatment of ferromagnetic metal powder

CHISSO CORP43 citations87

US5003919AApr 2, 1991

Apparatus for stabilization treatment of ferromagnetic metal powder

CHISSO CORP16 citations71

US4909865AMar 20, 1990

Process for producing a ferromagnetic metal powder having an oxidized coating

CHISSO CORP6 citations58