Inventor
MATSUSHIMA TETSUO
12 patents
⚠️ This page may combine multiple inventors who share the name “MATSUSHIMA TETSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
6 patentsUS5576625ANov 19, 1996
Test method and apparatus for testing a protective relay system
TOSHIBA KK57 citations93
US5786699AJul 28, 1998
Test method and apparatus for testing a protective relay system
TOSHIBA KK36 citations90
US4857854AAug 15, 1989
Digital fault locator
TOSHIBA KK12 citations73
US5666060ASep 9, 1997
Test method and apparatus for testing a protective relay system
TOSHIBA KK6 citations71
US6498709B2Dec 24, 2002
Digital distance relay
TOSHIBA KK6 citations61
US7233470B2Jun 19, 2007
Distance relay apparatus
TOSHIBA KK2 citations60
TOKYO SHIBAURA ELECTRIC CO
5 patentsUS4344143AAug 10, 1982
Digital type distance relay system
TOKYO SHIBAURA ELECTRIC CO24 citations80
US4333151AJun 1, 1982
Method for protecting an electric power system and digital protective system
TOKYO SHIBAURA ELECTRIC CO9 citations73
US4073009AFeb 7, 1978
Apparatus for calculating amplitude values of sinusoidal waves
TOKYO SHIBAURA ELECTRIC CO16 citations73
US4357666ANov 2, 1982
Digital distance relays
TOKYO SHIBAURA ELECTRIC CO8 citations71
US4073008AFeb 7, 1978
Apparatus for calculating amplitude values
TOKYO SHIBAURA ELECTRIC CO4 citations62