Inventor · disambiguated record
Keiji Ito
Also filed as: ITO KEIJI
58 granted patents·15 pending applications·2,922 citations·filing 1983–2025
99Inventor score
Top patents by PatentIndex Score
73 records- 0198US4519820AFitter apparatus for purifying exhaust gasesNIPPON DENSO CO·Filed 1983·Granted May 28, 1985·179 cites·15 claims
- 0295US4632683AExhaust gas purifying filter and production of the sameNIPPON DENSO CO·Filed 1985·Granted Dec 30, 1986·97 cites·10 claims
- 0393US7759283B2Catalyst for purifying exhaust gasTOYOTA MOTOR CO LTD·Filed 2007·Granted Jul 20, 2010·31 cites·3 claims
- 0493US7564884B1Ridge-stripe semiconductor laserPANASONIC CORP·Filed 2006·Granted Jul 21, 2009·21 cites·13 claims
- 0590US5454366AEndoscope distal end with folded circuit boardASASHI KOGAKU KOGYO KABUSHIKI·Filed 1993·Granted Oct 3, 1995·115 cites·12 claims
- 0686US5427087AStructure of the distal end portion of an endoscopeASAHI OPTICAL CO LTD·Filed 1991·Granted Jun 27, 1995·337 cites·6 claims
- 0784US6826297B2Displaying three-dimensional medical imagesTERARECON INC·Filed 2001·Granted Nov 30, 2004·45 cites·21 claims
- 0882US5685823AEnd structure of endoscopeASAHI OPTICAL CO LTD·Filed 1995·Granted Nov 11, 1997·303 cites·15 claims
- 0980US5725477AFront end structure of endoscopeASAHI OPTICAL CO LTD·Filed 1996·Granted Mar 10, 1998·236 cites·1 claims
- 1079US11941919B2Ticket issuing system, and ticket checking apparatusPLAYGROUND CO LTD·Filed 2021·Granted Mar 26, 2024·1 cites·19 claims
- 1179US8000597B2Input deviceALPS ELECTRIC CO LTD·Filed 2010·Granted Aug 16, 2011·5 cites·8 claims
- 1278US11759096B2EndoscopeHOYA CORP·Filed 2019·Granted Sep 19, 2023·3 cites·14 claims
- 1372US6596372B2Ceramic honeycomb structural body and methods of preparing the sameDENSO CORP·Filed 2000·Granted Jul 22, 2003·9 cites·9 claims
- 1472US6142930AElectronic endoscope having compact constructionASAHI OPTICAL CO LTD·Filed 1998·Granted Nov 7, 2000·185 cites·25 claims
- 1571US12254720B2Ticket issuing system, and ticket checking apparatusPLAYGROUND CO LTD·Filed 2024·Granted Mar 18, 2025·0 cites·18 claims
- 1671US6473704B1Information guidance systemMITSUBISHI PRECISION CO LTD·Filed 1998·Granted Oct 29, 2002·79 cites·26 claims
- 1771US5725474AFront end structure of endoscopeASAHI OPTICAL CO LTD·Filed 1996·Granted Mar 10, 1998·180 cites·2 claims
- 1870US6242072B1Honeycomb structural body and process for production of the sameDENSO CORP·Filed 1999·Granted Jun 5, 2001·35 cites·11 claims
- 1970US5725476AFront end structure of endoscopeASAHI OPTICAL CO LTD·Filed 1996·Granted Mar 10, 1998·170 cites·2 claims
- 2069US9248773B2Manned vehicle and cabin structure thereofSATO MAKOTO·Filed 2012·Granted Feb 2, 2016·2 cites·6 claims
- 2168US7301979B2Semiconductor laserMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2004·Granted Nov 27, 2007·8 cites·7 claims
- 2267US2022110506A1Endoscope with bendable insertion unitHOYA CORP·Filed 2021·Application pending·0 cites
- 2365US6409666B1Tip end of ultrasonic endoscopeASAHI OPTICAL CO LTD·Filed 2000·Granted Jun 25, 2002·34 cites·10 claims
- 2463US8018134B2Light source, optical pickup, and electronic apparatusPANASONIC CORP·Filed 2008·Granted Sep 13, 2011·1 cites·20 claims
- 2563US4971035AInsert part of endoscopeASAHI OPTICAL CO LTD·Filed 1990·Granted Nov 20, 1990·99 cites·10 claims
- 2662US10603134B2Touchless advanced image processing and visualizationTERARECON INC·Filed 2019·Granted Mar 31, 2020·0 cites·16 claims
- 2762US9334881B2Industrial vehicleTSURUTA MEGUMU·Filed 2011·Granted May 10, 2016·2 cites·1 claims
- 2861US12230086B2Information processing server, information processing system, determination device, and methodPLAYGROUND CO LTD·Filed 2022·Granted Feb 18, 2025·0 cites·6 claims
- 2961US6117071AEndoscope with movable imaging unit for zooming or focusingASAHI OPTICAL CO LTD·Filed 1998·Granted Sep 12, 2000·119 cites·55 claims
- 3061US5746695AFront end structure of endoscopeASAHI OPTICAL CO LTD·Filed 1996·Granted May 5, 1998·91 cites·3 claims
- 3161US5554342AElectrical heating type catalytic deviceTOYOTA MOTOR CO LTD·Filed 1995·Granted Sep 10, 1996·23 cites·25 claims
- 3261US2025148851A1Information processing server, information processing system, determination device, and methodPLAYGROUND CO LTD·Filed 2025·Application pending·0 cites
- 3360US5993381AOperating unit for an endoscopeASAHI OPTICAL CO LTD·Filed 1998·Granted Nov 30, 1999·94 cites·6 claims
- 3459US10806330B2Single use endoscope deviceHOYA CORP·Filed 2018·Granted Oct 20, 2020·0 cites·20 claims
- 3559US7028348B2Hair dressing device equipped with hoodTAKARA BELMONT CORP·Filed 2003·Granted Apr 18, 2006·10 cites·9 claims
- 3659US5411020AStructure of the distal end portion of an endoscopeASAHI OPTICAL CO LTD·Filed 1993·Granted May 2, 1995·79 cites·5 claims
- 3758US5788628AEndoscopeASAHI OPTICAL CO LTD·Filed 1997·Granted Aug 4, 1998·88 cites·17 claims
- 3857US10376336B2Touchless advanced image processing and visualizationZHAO TIECHENG·Filed 2017·Granted Aug 13, 2019·0 cites·17 claims
- 3956US11229350B2Endoscope with bendable insertion unitHOYA CORP·Filed 2017·Granted Jan 25, 2022·0 cites·8 claims
- 4056US2024095607A1Ticket system, program, and methodPLAYGROUND CO LTD·Filed 2023·Application pending·0 cites
- 4156US2007237380A1Three-dimensional medical image display device equipped with pre-processing system implementing clinical protocolTERARECON INC·Filed 2006·Application pending·0 cites
- 4256US2025022044A1Apparatus, method, and systemPLAYGROUND CO LTD·Filed 2024·Application pending·0 cites
- 4356US2023122142A1Information processing method, information processing device, and information processing systemHOYA CORP·Filed 2022·Application pending·0 cites
- 4455US6764716B2Ceramic honeycomb structural body and methods of preparing the sameDENSO CORP·Filed 2003·Granted Jul 20, 2004·1 cites·5 claims
- 4555US6724984B2Hair treatment promoting apparatus with rotatable reflectorTAKARA BELMONT CORP·Filed 2001·Granted Apr 20, 2004·6 cites·3 claims
- 4654US2021372100A1Device for water supplyLIXIL CORP·Filed 2019·Application pending·0 cites
- 4753US9839490B2Touchless advanced image processing and visualizationZHAO TIECHENG·Filed 2016·Granted Dec 12, 2017·0 cites·21 claims
- 4853US5305736ADistal end part of endoscopeASAHI OPTICAL CO LTD·Filed 1992·Granted Apr 26, 1994·60 cites·13 claims
- 4951US11937785B2Endoscope, distal tip piece, and method of manufacturing endoscopeHOYA CORP·Filed 2019·Granted Mar 26, 2024·0 cites·13 claims
- 5051US11562822B2Information processing method, information processing device, and information processing systemHOYA CORP·Filed 2019·Granted Jan 24, 2023·0 cites·9 claims
Showing the top 50 of 73 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →