Inventor

SHIRAKAWA KAZUOMI

JP3 patents

Patents

3 patents

US7786719B2Aug 31, 2010

Optical sensor, optical current sensor and optical voltage sensor

TOKYO ELECTRIC POWER CO14 citations80

US7655900B2Feb 2, 2010

Intensity modulation type optical sensor and optical current/voltage sensor

TOKYO ELECTRIC POWER CO8 citations80

US7589515B2Sep 15, 2009

Method for reducing temperature-dependent error in photocurrent sensor, and photocurrent sensor device

TOKYO ELECTRIC POWER CO0 citations48