Inventor
OGAWA SOICHIRO
JP23 patents
⚠️ This page may combine multiple inventors who share the name “OGAWA SOICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
12 patentsUS5384516AJan 24, 1995
Information processing apparatus including a control circuit for controlling a liquid crystal display illumination based on whether illuminatio power is being supplied from an AC power source or from a battery
HITACHI LTD121 citations97
US4682080AJul 21, 1987
Discharge lamp operating device
HITACHI LTD47 citations92
US4803399AFeb 7, 1989
Fluorescent lamp arrangement for uniformly illuminating a display panel
HITACHI LTD41 citations90
US5130605AJul 14, 1992
Lighting device for fluorescent lamp
HITACHI LTD9 citations74
US6342763B1Jan 29, 2002
Fluorescent lamp, method for manufacturing the same, and fluorescent lamp device
HITACHI LTD9 citations73
US5828180AOct 27, 1998
Driving method of discharge apparatus
HITACHI LTD15 citations73
US4746841AMay 24, 1988
Fluorescent lamp operating device
HITACHI LTD16 citations73
US4766524AAug 23, 1988
Back light device for uniformly illuminating a liquid crystal display plate
HITACHI LTD14 citations72
US4916580AApr 10, 1990
Back-light device
HITACHI LTD17 citations71
US6756723B2Jun 29, 2004
Fluorescent lamp, method for manufacturing the same, and fluorescent lamp device
HITACHI LTD2 citations62
US4433272AFeb 21, 1984
High-pressure discharge lamp
HITACHI LTD5 citations62
US4928037AMay 22, 1990
Protected discharge lamp lighting system
HITACHI LTD4 citations60