Inventor
SONOBE YASUTAKA
JP4 patents
Patents
4 patentsUS7106565B2Sep 12, 2006
Directional ground relay system
TOSHIBA KK9 citations70
US6937453B2Aug 30, 2005
Directional comparison distance relay system
TOSHIBA KK8 citations70
US6873508B2Mar 29, 2005
Protective relay system
TOSHIBA KK8 citations70
US6989977B2Jan 24, 2006
Digital directional relay
TOSHIBA KK6 citations59