Inventor · disambiguated record
Isao Nakajima
Also filed as: NAKAJIMA ISAO
69 granted patents·8 pending applications·1,181 citations·filing 1980–2022
99Inventor score
Top patents by PatentIndex Score
77 records- 0190US6601951B2Printers and printing methodHITACHI KOKI KK·Filed 2001·Granted Aug 5, 2003·31 cites·14 claims
- 0290US5855553ARemote surgery support system and method thereofHITCHI LTD·Filed 1996·Granted Jan 5, 1999·545 cites·40 claims
- 0389US8548718B2Air/fuel ratio variation abnormality detection apparatus, and abnormality detection methodKATO TOSHIHIRO·Filed 2012·Granted Oct 1, 2013·10 cites·4 claims
- 0487US8620564B2Abnormality detection apparatus and abnormality detection method for multi-cylinder internal combustion engineHAKARIYA MASASHI·Filed 2012·Granted Dec 31, 2013·8 cites·5 claims
- 0586US7773896B2Image forming apparatus and toner adhesion amount correction methodRICOH KK·Filed 2007·Granted Aug 10, 2010·9 cites·9 claims
- 0686US6445895B2Image forming apparatus having a belt attaching/detaching mechanismHITACHI KOKI KK·Filed 2001·Granted Sep 3, 2002·30 cites·7 claims
- 0785US6847788B2System and method for equalizing transmission characteristics in wavelength division multiplexing optical communication systemFUJITSU LTD·Filed 2000·Granted Jan 25, 2005·23 cites·30 claims
- 0883US7539453B2Printer capable of reserving sheet wrapping widthRICOH KK·Filed 2005·Granted May 26, 2009·8 cites·11 claims
- 0983US7450883B2Film loader for an image forming apparatusRICOH PRINTING SYS LTD·Filed 2007·Granted Nov 11, 2008·5 cites·21 claims
- 1083US5774777AContinuous recording medium friction-conveying mechanism in image forming apparatusHITACHI LTD·Filed 1996·Granted Jun 30, 1998·36 cites·16 claims
- 1181US7917045B2Image forming apparatus and image forming methodRICOH CO LTD·Filed 2007·Granted Mar 29, 2011·7 cites·17 claims
- 1281US4810836AOptical fiber-containing insulatorsNGK INSULATORS LTD·Filed 1988·Granted Mar 7, 1989·38 cites·20 claims
- 1379US10275938B2Image processing apparatus and image processing methodSONY CORP·Filed 2016·Granted Apr 30, 2019·3 cites·16 claims
- 1479US8045871B2Image forming apparatus and image forming method on measured physical quantityRICOH CO LTD·Filed 2008·Granted Oct 25, 2011·6 cites·20 claims
- 1579US4921322AOptical fiber composite insulatorNGK INSULATORS LTD·Filed 1989·Granted May 1, 1990·34 cites·5 claims
- 1676US10563602B2Controller and control method for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2018·Granted Feb 18, 2020·1 cites·7 claims
- 1776US8805609B2Apparatus and method for detecting abnormal air-fuel ratio variationTANAKA HITOSHI·Filed 2012·Granted Aug 12, 2014·4 cites·6 claims
- 1875US9043121B2Air-fuel ratio variation abnormality detecting device and air-fuel ratio variation abnormality detecting methodKATO TOSHIHIRO·Filed 2013·Granted May 26, 2015·4 cites·4 claims
- 1975US7295794B2Film loader for an image forming apparatusRICOH PRINTING SYS LTD·Filed 2006·Granted Nov 13, 2007·3 cites·3 claims
- 2074US6496672B2Image production apparatusHITACHI LTD·Filed 2000·Granted Dec 17, 2002·14 cites·4 claims
- 2174US5519080AInsulatorsDOW CORNING TORAY SILICONE·Filed 1994·Granted May 21, 1996·34 cites·16 claims
- 2273US10677180B2Controller and control method for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2018·Granted Jun 9, 2020·1 cites·7 claims
- 2373US9752523B2Air-fuel ratio control apparatus for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2014·Granted Sep 5, 2017·3 cites·2 claims
- 2473US6104907AImage recording apparatus which prevents variation in speed of a recording medium and reduces shift values thereofHITACHI LTD·Filed 1998·Granted Aug 15, 2000·22 cites·26 claims
- 2572US7747209B2Printing apparatusRICOH KK·Filed 2006·Granted Jun 29, 2010·4 cites·20 claims
- 2670US6927875B2Printing system and printing methodHITACHI KOKI KK·Filed 2001·Granted Aug 9, 2005·14 cites·5 claims
- 2770US6285854B1Image recording apparatusHITACHI LTD·Filed 2000·Granted Sep 4, 2001·12 cites·6 claims
- 2870US5572290AElectrophotographic printing system including a plurality of electrophotographic printers having adjustable printing speedsHITACHI KOKI KK·Filed 1995·Granted Nov 5, 1996·23 cites·3 claims
- 2966US7336917B2Film loader for an image forming apparatusRICOH PRINTING SYS LTD·Filed 2003·Granted Feb 26, 2008·7 cites·12 claims
- 3065US4438692APrinting apparatus with cooling of hammer printing coilsHITACHI LTD·Filed 1983·Granted Mar 27, 1984·14 cites·10 claims
- 3164US6130408ARecording apparatus with conveyed recording sheet heated by movable heaterHITACHI LTD·Filed 1998·Granted Oct 10, 2000·16 cites·6 claims
- 3264US4952782AFixing unit for electrophotographic deviceHITACHI KOKI KK·Filed 1988·Granted Aug 28, 1990·15 cites·15 claims
- 3363US8892337B2Apparatus for detecting imbalance abnormality in air-fuel ratio between cylinders in multi-cylinder internal combustion engineKITANO SHOTA·Filed 2011·Granted Nov 18, 2014·2 cites·8 claims
- 3460US9097193B2Inter-cylinder air-fuel ratio variation abnormality detection apparatus for multicylinder internal combustion engineODA YOSHIHISA·Filed 2013·Granted Aug 4, 2015·2 cites·3 claims
- 3559US11898975B2Electron spectrometerUNIV TOHOKU·Filed 2022·Granted Feb 13, 2024·0 cites·11 claims
- 3658US4511269ACancel type printing headHITACHI LTD·Filed 1983·Granted Apr 16, 1985·11 cites·7 claims
- 3756US10787983B2Controller and control method for internal combustion engineTOYOTA MOTOR CO LTD·Filed 2018·Granted Sep 29, 2020·0 cites·11 claims
- 3856US6807245B2PLO deviceFUJITSU LTD·Filed 2002·Granted Oct 19, 2004·4 cites·6 claims
- 3953US5834110APolymer insulatorNGK INSULATORS LTD·Filed 1996·Granted Nov 10, 1998·17 cites·4 claims
- 4053US4961704ASheet meandering movement preventing methodHITACHI KOKI KK·Filed 1989·Granted Oct 9, 1990·10 cites·3 claims
- 4153US4949096ALaser printer with thermal fixing of tonerOGAWA TOSHITAKA·Filed 1989·Granted Aug 14, 1990·10 cites·8 claims
- 4252US5652949APreheating controller for a two-stage electrophotographic printing systemHITACHI KOKI KK·Filed 1996·Granted Jul 29, 1997·12 cites·5 claims
- 4352US5648132AComposite insulator, segment used for producing the same and method of producing the same by using the segmentNGK INSULATORS LTD·Filed 1995·Granted Jul 15, 1997·17 cites·6 claims
- 4451US5109466AMethod for producing an optical fiber composite insulatorNGK INSULATORS LTD·Filed 1989·Granted Apr 28, 1992·12 cites·5 claims
- 4549US9932923B2Abnormality determination apparatusTOYOTA MOTOR CO LTD·Filed 2016·Granted Apr 3, 2018·0 cites·4 claims
- 4649US6603942B2Image forming apparatus having belt-shaped carrierHITACHI LTD·Filed 2002·Granted Aug 5, 2003·4 cites·7 claims
- 4748US5702731ALateral type molding apparatus for the production of composite insulatorsNGK INSULATORS LTD·Filed 1995·Granted Dec 30, 1997·14 cites·6 claims
- 4847US7308220B2Belt unit of electrophotographic printing apparatusRICOH PRINTING SYS LTD·Filed 2004·Granted Dec 11, 2007·3 cites·20 claims
- 4947US5961864AToner image heating deviceHITACHI KOKI KK·Filed 1998·Granted Oct 5, 1999·8 cites·10 claims
- 5047US4587399AThermal headHITACHI LTD·Filed 1984·Granted May 6, 1986·6 cites·18 claims
Showing the top 50 of 77 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Isao 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 →