Inventor
MAEZAWA SHIGENARI
JP3 patents
Patents
3 patentsUS4929903AMay 29, 1990
Method of and apparatus for assessing insulation conditions
MITSUI PETROCHEMICAL IND37 citations87
US5117191AMay 26, 1992
Apparatus for monitoring degradation of insulation of electrical installation
MITSUI PETROCHEMICAL IND38 citations86
US4897561AJan 30, 1990
Apparatus for and method of discriminating signals
MITSUI PETROCHEMICAL IND8 citations68