Inventor · disambiguated record
Yasuji Ogawa
Also filed as: OGAWA YASUJI
29 granted patents·3 pending applications·2,353 citations·filing 1994–2014
98Inventor score
Top patents by PatentIndex Score
32 records- 0197US6100538AOptical digitizer and display means for providing display of indicated positionKABUSHIKIKAISHA WACOM·Filed 1998·Granted Aug 8, 2000·361 cites·26 claims
- 0295US6362468B1Optical unit for detecting object and coordinate input apparatus using sameSAEILO JAPAN INC·Filed 2000·Granted Mar 26, 2002·176 cites·10 claims
- 0395US5502568AOptical position detecting unit, optical coordinate input unit and optical position detecting method employing a pattern having a sequence of 1's and 0'sWACOM CO LTD·Filed 1994·Granted Mar 26, 1996·217 cites·11 claims
- 0494US7414617B2Coordinate input device working with at least display screen and desk-top surface as the pointing areas thereofEIT CO LTD·Filed 2007·Granted Aug 19, 2008·47 cites·4 claims
- 0594US6498602B1Optical digitizer with function to recognize kinds of pointing instrumentsNEWCOM INC·Filed 2000·Granted Dec 24, 2002·137 cites·15 claims
- 0694US5572251AOptical position detecting unit and optical coordinate input unitWACOM CO LTD·Filed 1994·Granted Nov 5, 1996·217 cites·24 claims
- 0793US7202860B2Coordinate input device working with at least display screen and desk-top surface as the pointing areas thereofXIROKU INC·Filed 2002·Granted Apr 10, 2007·84 cites·10 claims
- 0892US6567078B2Handwriting communication system and handwriting input device used thereinXIROKU INC·Filed 2001·Granted May 20, 2003·89 cites·21 claims
- 0992US5644126AManual implement for inputting incremental information by attitude controlKABUSHIKIKAISHA WACOM·Filed 1995·Granted Jul 1, 1997·91 cites·24 claims
- 1092US5561543AInformation input system by attitude detection of manual implementKABUSHIKIKAISHA WACOM·Filed 1995·Granted Oct 1, 1996·143 cites·11 claims
- 1191US6441362B1Stylus for optical digitizerKABUSHIKIKAISHA WACOM·Filed 1999·Granted Aug 27, 2002·154 cites·10 claims
- 1291US5565632APressure sensitive stylus penWACOM CO LTD·Filed 1995·Granted Oct 15, 1996·184 cites·24 claims
- 1386US5499098AOptical position detecting unit and optical coordinate input unit utilizing a sub-portion of a M-sequence patternWACOM CO LTD·Filed 1994·Granted Mar 12, 1996·112 cites·24 claims
- 1480US7800362B1Pressure distribution detector utilizing electromagnetic couplingXIROKU INC·Filed 2006·Granted Sep 21, 2010·13 cites·22 claims
- 1577US7703342B2Pressure distribution detection deviceXIROKU INC·Filed 2006·Granted Apr 27, 2010·11 cites·18 claims
- 1674US7861605B2Pressure distribution sensor utilizing electromagnetic couplingNEWCOM INC·Filed 2007·Granted Jan 4, 2011·10 cites·17 claims
- 1772US7477243B2Apparatus for controlling the shift of virtual space and method and program for controlling sameEIT CO LTD·Filed 2003·Granted Jan 13, 2009·24 cites·24 claims
- 1872US5693914ADigitizer and method of detecting positionsWACOM CO LTD·Filed 1995·Granted Dec 2, 1997·66 cites·15 claims
- 1972US5682019APosition detecting apparatus and position pointing device including elapsed time period build up detectorWACOM CO LTD·Filed 1995·Granted Oct 28, 1997·62 cites·7 claims
- 2068US5694203ADistance camera device having light gate for extracting distance informationKABUSHIKIKAISHA WACOM·Filed 1995·Granted Dec 2, 1997·45 cites·21 claims
- 2162US5608528AOptical position detecting method using asynchronous modulation of light sourceKABUSHIKIKAISHA WACOM·Filed 1995·Granted Mar 4, 1997·34 cites·4 claims
- 2260US5640241ALight spot position measuring method of detecting one-dimensional position by two-dimensional sensorKABUSHIKIKAISHA WACOM·Filed 1995·Granted Jun 17, 1997·43 cites·23 claims
- 2356US8563880B2Operating tool with conductor piecesOGAWA YASUJI·Filed 2007·Granted Oct 22, 2013·0 cites·21 claims
- 2449US10088946B2Coordinate detection device having looped drive lines and detection linesXIROKU INC·Filed 2014·Granted Oct 2, 2018·0 cites·7 claims
- 2548US5548392AOptical position detector having scale pattern spot-illuminated to increase resolutionKABUSHIKIKAISHA WACOM·Filed 1995·Granted Aug 20, 1996·14 cites·17 claims
- 2647US7703341B2Pressure detecting apparatus utilizing electromagnetic couplingXIROKU INC·Filed 2004·Granted Apr 27, 2010·4 cites·13 claims
- 2745US8330726B2Position detection apparatus using area image sensorOGAWA YASUJI·Filed 2004·Granted Dec 11, 2012·5 cites·19 claims
- 2843US5642164ALight spot position measuring apparatus having orthogonal cylindrical lensesKABUSHIKIKAISHA WACOM·Filed 1995·Granted Jun 24, 1997·10 cites·14 claims
- 2940US8013598B2Object detecting device for detecting object using electromagnetic inductionNEWCOM INC·Filed 2007·Granted Sep 6, 2011·0 cites·12 claims
- 3037US2012224054A1Optical Position Detecting DeviceOGAWA YASUJI·Filed 2010·Application pending·0 cites
- 3137US2012098746A1Optical Position Detection ApparatusOGAWA YASUJI·Filed 2010·Application pending·0 cites
- 3237US2012068974A1Optical Position Detection ApparatusOGAWA YASUJI·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →