Inventor
ANDOW FUMIO
JP17 patents
⚠️ This page may combine multiple inventors who share the name “ANDOW FUMIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOKYO SHIBAURA ELECTRIC CO
12 patentsUS4371908AFeb 1, 1983
Digital protective relaying systems
TOKYO SHIBAURA ELECTRIC CO32 citations91
US4309767AJan 5, 1982
Monitor system for a digital signal
TOKYO SHIBAURA ELECTRIC CO28 citations78
US4561120ADec 24, 1985
Protective relaying system
TOKYO SHIBAURA ELECTRIC CO20 citations73
US4541058ASep 10, 1985
Protective relay system
TOKYO SHIBAURA ELECTRIC CO14 citations73
US4484246ANov 20, 1984
Reclosing device for transmission line
TOKYO SHIBAURA ELECTRIC CO10 citations73
US4073009AFeb 7, 1978
Apparatus for calculating amplitude values of sinusoidal waves
TOKYO SHIBAURA ELECTRIC CO16 citations73
US4507700AMar 26, 1985
Protective relaying system
TOKYO SHIBAURA ELECTRIC CO15 citations72
US4511981AApr 16, 1985
Protective relaying system
TOKYO SHIBAURA ELECTRIC CO8 citations65
US4073008AFeb 7, 1978
Apparatus for calculating amplitude values
TOKYO SHIBAURA ELECTRIC CO4 citations62
US4056839ANov 1, 1977
Protective relay devices
TOKYO SHIBAURA ELECTRIC CO4 citations62
US4370571AJan 25, 1983
Relay device
TOKYO SHIBAURA ELECTRIC CO5 citations61
US4071873AJan 31, 1978
Apparatus for detecting abnormal conditions of transmitted signals
TOKYO SHIBAURA ELECTRIC CO5 citations59
TOSHIBA KK
4 patentsUS4803635AFeb 7, 1989
Information data output device for electric-power systems
TOSHIBA KK45 citations92
US4774621ASep 27, 1988
Protective control method and apparatus
TOSHIBA KK31 citations92
US4825326AApr 25, 1989
Digital calculation type differential relay
TOSHIBA KK38 citations91
US5796630AAug 18, 1998
Protective relay system provided with difference and addition filters
TOSHIBA KK18 citations83