Inventor
FUJIWARA KATSUHIRO
JP9 patents
⚠️ This page may combine multiple inventors who share the name “FUJIWARA KATSUHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS5197129AMar 23, 1993
Input/output device and a control system incorporating such a device
HITACHI LTD7 citations72
US5070476ADec 3, 1991
Sequence controller
HITACHI LTD11 citations72
USD307740SMay 8, 1990
Programmable controller
HITACHI LTD12 citations71
US4807178AFeb 21, 1989
Programmable sequence controller having indirect and direct input/output apparatus
HITACHI LTD8 citations71
US4833589AMay 23, 1989
Programmable sequence controller
HITACHI LTD12 citations68
US4748553AMay 31, 1988
Sequence control apparatus
HITACHI LTD10 citations68
US4502112AFeb 26, 1985
Sequence control apparatus
HITACHI LTD10 citations68
US5065307ANov 12, 1991
Apparatus for insulating and preventing noise in the output of a sequence controller
HITACHI LTD0 citations50