Inventor · disambiguated record
Hajime Nakajima
Also filed as: NAKAJIMA HAJIME
56 granted patents·6 pending applications·565 citations·filing 1980–2021
98Inventor score
Files withMITSUBISHI ELECTRIC CORP30CANON KK7NIPPON TELEGRAPH & TELEPHONE7SHIMIZU CONSTRUCTION CO LTD3MUSHA TAKESHI2
Top patents by PatentIndex Score
62 records- 0187US6972834B1Optical distance sensorKARLSRUHE FORSCHZENT·Filed 2000·Granted Dec 6, 2005·38 cites·1 claims
- 0287US5247493AMagneto-optical recording and reproducing disk device having a bimorph type actuator with specific structures for mounting a magnetic head in opposing to the surface of the diskMITSUBISHI ELECTRIC CORP·Filed 1989·Granted Sep 21, 1993·35 cites·15 claims
- 0383US6095514ASheet supplying apparatus and recording or reading apparatusCANON KK·Filed 1998·Granted Aug 1, 2000·32 cites·16 claims
- 0477US11385772B2Attribute-based rules for displaying additional informationNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jul 12, 2022·2 cites·15 claims
- 0576US9702735B2Magnetic rotation-angle detectorMITSUBISHI ELECTRIC CORP·Filed 2013·Granted Jul 11, 2017·3 cites·4 claims
- 0676US9462150B2Image read-in device with fastener to fasten transparent member retaining lens array assembly and light shield to boardMITSUBISHI ELECTRIC CORP·Filed 2013·Granted Oct 4, 2016·3 cites·15 claims
- 0776US5107483AFrequency selective optical data record/regenerate apparatusMITSUBISHI ELECTRIC CORP·Filed 1988·Granted Apr 21, 1992·20 cites·23 claims
- 0875US5428217AAnnular photodiode for use in an optical rotary encoderMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Jun 27, 1995·30 cites·4 claims
- 0973US5115424AOptical storage medium with provision for limitation of thermal conductionMITSUBISHI ELECTRIC CORP·Filed 1989·Granted May 19, 1992·18 cites·6 claims
- 1071US8157377B2Ophthalmologic photographing apparatusTAKAI MOTOYA·Filed 2010·Granted Apr 17, 2012·5 cites·5 claims
- 1171US7905598B2Ophthalmologic photographing apparatusCANON KK·Filed 2010·Granted Mar 15, 2011·5 cites·7 claims
- 1269US8829421B2Optical encoderNOGUCHI TAKUYA·Filed 2011·Granted Sep 9, 2014·3 cites·2 claims
- 1369US5305294AMagneto-optical recording/reproducing system having an electromagnetic actuatorMITSUBISHI ELECTRIC CORP·Filed 1993·Granted Apr 19, 1994·28 cites·9 claims
- 1468US7939796B2Electronic device housingMITSUBISHI ELECTRIC CORP·Filed 2007·Granted May 10, 2011·7 cites·4 claims
- 1567US11435822B2Estimation method, estimation program, and estimation deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Sep 6, 2022·1 cites·7 claims
- 1667US9605981B1Absolute encoderMITSUBISHI ELECTRIC CORP·Filed 2015·Granted Mar 28, 2017·1 cites·12 claims
- 1767US6631788B2Elevator system with safety installationMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Oct 14, 2003·15 cites·12 claims
- 1865US8415610B2Optical encoder having a single signal track and an optical detecting part with sine and cosine signalsNAKAJIMA HAJIME·Filed 2009·Granted Apr 9, 2013·5 cites·9 claims
- 1965US6198862B1Optical position detectorMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Mar 6, 2001·14 cites·3 claims
- 2064US9664535B2Rotation number detectorTATEI YOSHINAO·Filed 2013·Granted May 30, 2017·2 cites·7 claims
- 2164US9588236B2Radioactivity analyzing apparatusMITSUBISHI ELECTRIC CORP·Filed 2013·Granted Mar 7, 2017·2 cites·10 claims
- 2263US5729816ASheet convey apparatusCANON KK·Filed 1995·Granted Mar 17, 1998·15 cites·13 claims
- 2362US7470892B2Optical encoderMITSUBISHI ELECTRIC CORP·Filed 2004·Granted Dec 30, 2008·9 cites·22 claims
- 2461US10399817B2Elevator car position detection deviceMITSUBISHI ELECTRIC CORP·Filed 2013·Granted Sep 3, 2019·2 cites·20 claims
- 2561US9410828B2Servomotor and encoderMITSUBISHI ELECTRIC CORP·Filed 2013·Granted Aug 9, 2016·1 cites·12 claims
- 2661US8857993B2Ophthalmologic apparatusNAKAJIMA HAJIME·Filed 2012·Granted Oct 14, 2014·2 cites·14 claims
- 2761US6972402B2Photoelectric rotary encoderMITSUBISHI ELECTRIC CORP·Filed 2003·Granted Dec 6, 2005·8 cites·15 claims
- 2861US6657185B2Pattern detector for capturing images with reduced distortionMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Dec 2, 2003·8 cites·11 claims
- 2961US4432097ATone control circuitSONY CORP·Filed 1980·Granted Feb 14, 1984·13 cites·6 claims
- 3060US9222993B2Magnetic substance detection deviceMUSHA TAKESHI·Filed 2011·Granted Dec 29, 2015·2 cites·13 claims
- 3160US6010125ASheet supplying apparatus and recording apparatus or reading apparatus using the sameCANON KK·Filed 1997·Granted Jan 4, 2000·13 cites·9 claims
- 3259US8134359B2Magnetic rotational-angle detectorNISHIZAWA HIROSHI·Filed 2008·Granted Mar 13, 2012·4 cites·2 claims
- 3359US5426296AIrregular pattern input device comprising an optical fiber bundleMITSUBISHI ELECTRIC CORP·Filed 1994·Granted Jun 20, 1995·61 cites·25 claims
- 3458US8979265B2Fundus cameraITOH HIROSHI·Filed 2010·Granted Mar 17, 2015·1 cites·17 claims
- 3558US5231282AOptical writing type liquid crystal light valve and writing apparatus thereforMITSUBISHI ELECTRIC CORP·Filed 1992·Granted Jul 27, 1993·20 cites·3 claims
- 3658US5117594AOpenable roof apparatusMITSUBISHI HEAVY IND LTD·Filed 1990·Granted Jun 2, 1992·36 cites·26 claims
- 3757US7538313B2Optical encoder having a no track portion of an optical scale being placed at a position symmetrical to a light non-transparent portion within an irradiation region of incident lightMITSUBISHI ELECTRIC CORP·Filed 2007·Granted May 26, 2009·2 cites·1 claims
- 3855US9792688B2Position detection deviceMITSUBISHI ELECTRIC CORP·Filed 2015·Granted Oct 17, 2017·1 cites·17 claims
- 3953US7285769B2Optical encoder with reduced reflected light error having a light non-transparent portion with inclined surfacesMITSUBISHI ELECTRIC CORP·Filed 2004·Granted Oct 23, 2007·5 cites·7 claims
- 4052US11836288B2Distance estimation device, distance estimation method and distance estimation programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Dec 5, 2023·0 cites·12 claims
- 4152US7577279B2Identity verification apparatus and fingerprint image pickup methodMITSUBISHI ELECTRIC CORP·Filed 2004·Granted Aug 18, 2009·9 cites·10 claims
- 4252US2010073633A1Fundus cameraCANON KK·Filed 2009·Application pending·0 cites
- 4351US6956200B2Phase-shift photoelectric encoderMITSUBISHI ELECTRIC CORP·Filed 2004·Granted Oct 18, 2005·6 cites·14 claims
- 4451US6054938AOptical encoderMITSUBISHI ELECTRIC CORP·Filed 1998·Granted Apr 25, 2000·15 cites·7 claims
- 4548US11314530B2User-based extension setting devices, methods, and programsNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Apr 26, 2022·0 cites·8 claims
- 4648US8939581B2Ophthalmologic photographing apparatusTAKAI MOTOYA·Filed 2012·Granted Jan 27, 2015·0 cites·8 claims
- 4748US8421622B2Monitoring system for moving objectTSUJITA WATARU·Filed 2010·Granted Apr 16, 2013·1 cites·20 claims
- 4847US2014118691A1Ophthalmic apparatus, imaging control apparatus, and imaging control methodCANON KK·Filed 2013·Application pending·0 cites
- 4946US5949470ARoller unit and imaging apparatus using the sameCANON KK·Filed 1995·Granted Sep 7, 1999·11 cites·10 claims
- 5045US6846116B2Sensor headMITSUBISHI ELECTRIC CORP·Filed 2000·Granted Jan 25, 2005·7 cites·5 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Hajime Nakajima files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →