Inventor · disambiguated record
Souji Ichikawa
Also filed as: ICHIKAWA SOUJI
12 granted patents·270 citations·filing 1983–1992
93Inventor score
Top patents by PatentIndex Score
12 records- 0189US4912322AOptical type displacement detecting deviceMITUTOYO MFG CO LTD·Filed 1987·Granted Mar 27, 1990·50 cites·22 claims
- 0283US4569137ALinear scale type displacement measuring device and main scale attaching method thereofMITUTOYO MFG CO LTD·Filed 1984·Granted Feb 11, 1986·32 cites·10 claims
- 0382US5026164AOptical encoderMITUTOYO CORP·Filed 1989·Granted Jun 25, 1991·29 cites·4 claims
- 0476US4991125ADisplacement detectorMITUTOYO CORP·Filed 1989·Granted Feb 5, 1991·26 cites·8 claims
- 0573US5067816AOptical encoderMITUTOYO CORP·Filed 1990·Granted Nov 26, 1991·25 cites·9 claims
- 0671US4943716ADiffraction-type optical encoder with improved detection signal insensitivity to optical grating gap variationsMITUTOYO CORP·Filed 1989·Granted Jul 24, 1990·17 cites·2 claims
- 0770US5204524ATwo-dimensional optical encoder with three gratings in each dimensionMITUTOYO CORP·Filed 1992·Granted Apr 20, 1993·27 cites·11 claims
- 0858US5198663AAngular velocity sensor with displacement scale and sensor meansMITUTOYO CORP·Filed 1992·Granted Mar 30, 1993·21 cites·17 claims
- 0957US4983825ADiffraction type optical encoder with improved detection signal insensitivity to optical grating gap variationsMITUTOYO CORP·Filed 1990·Granted Jan 8, 1991·13 cites·4 claims
- 1051US4492033ALinear scale type displacement measuring instrumentMITUTOYO MFG CO LTD·Filed 1983·Granted Jan 8, 1985·11 cites·6 claims
- 1149US4985623ADiffraction-type optical encoder with improved detection signal insensitivity to optical grating gap variationsMITYTOYO CORP·Filed 1990·Granted Jan 15, 1991·11 cites·3 claims
- 1242US4605274ACable connecting deviceMITUTOYO MFG CO LTD·Filed 1984·Granted Aug 12, 1986·8 cites·32 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →