Inventor
ICHIKAWA SOUJI
US12 patents
⚠️ This page may combine multiple inventors who share the name “ICHIKAWA SOUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITUTOYO CORP
7 patentsUS5067816ANov 26, 1991
Optical encoder
MITUTOYO CORP25 citations92
US5026164AJun 25, 1991
Optical encoder
MITUTOYO CORP29 citations92
US4991125AFeb 5, 1991
Displacement detector
MITUTOYO CORP26 citations92
US5204524AApr 20, 1993
Two-dimensional optical encoder with three gratings in each dimension
MITUTOYO CORP27 citations91
US5198663AMar 30, 1993
Angular velocity sensor with displacement scale and sensor means
MITUTOYO CORP21 citations91
US4983825AJan 8, 1991
Diffraction type optical encoder with improved detection signal insensitivity to optical grating gap variations
MITUTOYO CORP13 citations81
US4943716AJul 24, 1990
Diffraction-type optical encoder with improved detection signal insensitivity to optical grating gap variations
MITUTOYO CORP17 citations81
MITUTOYO MFG CO LTD
4 patentsUS4912322AMar 27, 1990
Optical type displacement detecting device
MITUTOYO MFG CO LTD50 citations92
US4569137AFeb 11, 1986
Linear scale type displacement measuring device and main scale attaching method thereof
MITUTOYO MFG CO LTD32 citations92
US4605274AAug 12, 1986
Cable connecting device
MITUTOYO MFG CO LTD8 citations73
US4492033AJan 8, 1985
Linear scale type displacement measuring instrument
MITUTOYO MFG CO LTD11 citations73