Inventor · disambiguated record
Ken Nakagawa
Also filed as: NAKAGAWA KEN · NAKAGAWA KEN-ICHIRO
52 granted patents·6 pending applications·349 citations·filing 1999–2025
98Inventor score
Top patents by PatentIndex Score
58 records- 0198US11442385B2Heater including a plurality of heat generation members, fixing apparatus, and image forming apparatusCANON KK·Filed 2021·Granted Sep 13, 2022·4 cites·11 claims
- 0298US11073778B2Heater including a plurality of heat generation members, fixing apparatus, and image forming apparatusCANON KK·Filed 2020·Granted Jul 27, 2021·6 cites·17 claims
- 0396US11774891B2Heater including a plurality of heat generation members, fixing apparatus, and image forming apparatusCANON KK·Filed 2022·Granted Oct 3, 2023·2 cites·11 claims
- 0495US6459878B1Heating assembly, image-forming apparatus, and process for producing silicone rubber sponge and rollerCANON KK·Filed 2000·Granted Oct 1, 2002·60 cites·25 claims
- 0594US10216130B2Heating rotating member and heating apparatusCANON KK·Filed 2016·Granted Feb 26, 2019·8 cites·22 claims
- 0694US8811872B2Image heating apparatus, film used for the apparatus, and manufacturing method of flexible resin material for the filmNAKAGAWA KEN·Filed 2012·Granted Aug 19, 2014·13 cites·15 claims
- 0794US8290385B2Image forming apparatus for transferring transfer residual toner onto image bearing memberNAKAGAWA KEN·Filed 2012·Granted Oct 16, 2012·9 cites·13 claims
- 0894US7978998B2Image forming apparatus for transferring transfer residual toner onto image bearing memberCANON KK·Filed 2008·Granted Jul 12, 2011·13 cites·14 claims
- 0994US2025390043A1Heater including a plurality of heat generation members, fixing apparatus, and image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 1093US6175699B1Image fixing device with heater controlCANON KK·Filed 1999·Granted Jan 16, 2001·63 cites·18 claims
- 1192US10503105B2Fixing apparatus having a tubular film that includes a low resistance layer formed in a heat generating layerCANON KK·Filed 2019·Granted Dec 10, 2019·5 cites·21 claims
- 1291US11221575B2Image forming apparatus including a plurality of heat generating elementsCANON KK·Filed 2020·Granted Jan 11, 2022·2 cites·26 claims
- 1390US7587149B2Image forming apparatus and method for controlling the sameCANON KK·Filed 2006·Granted Sep 8, 2009·12 cites·3 claims
- 1489US8891989B2Image forming apparatusUMEDA KENSUKE·Filed 2012·Granted Nov 18, 2014·9 cites·6 claims
- 1586US8238807B2Image forming apparatusDODA KAZUHIRO·Filed 2011·Granted Aug 7, 2012·3 cites·13 claims
- 1686US8005411B2Image forming apparatus having a transfer unit including an elastic memberCANON KK·Filed 2010·Granted Aug 23, 2011·4 cites·10 claims
- 1785US10999476B2Image forming apparatus configured to perform gradation correction processCANON KK·Filed 2020·Granted May 4, 2021·2 cites·26 claims
- 1885US8180247B2Image forming apparatus for transferring transfer residual toner onto image bearing memberNAKAGAWA KEN·Filed 2011·Granted May 15, 2012·3 cites·10 claims
- 1984US10788769B2Image forming apparatusCANON KK·Filed 2018·Granted Sep 29, 2020·2 cites·10 claims
- 2083US12416886B2Heater including a plurality of heat generation members, fixing apparatus, and image forming apparatusCANON KK·Filed 2023·Granted Sep 16, 2025·0 cites·18 claims
- 2181US7031629B2Image forming apparatus which recovers toner by developing deviceCANON KK·Filed 2003·Granted Apr 18, 2006·20 cites·40 claims
- 2281US6738593B2Developing device with developer bearing member overlying developer containing chamberCANON KK·Filed 2002·Granted May 18, 2004·19 cites·4 claims
- 2380US8165512B2Image forming apparatus having a transfer device having one or both of concave and convex portionsDODA KAZUHIRO·Filed 2009·Granted Apr 24, 2012·4 cites·24 claims
- 2479US8086160B2Fixing apparatus, roller for the fixing apparatus, flexible sleeve for the fixing apparatus, and methods of manufacturing the roller for the fixing apparatus and the flexible sleeve for the fixing apparatusNISHIZAWA YUKI·Filed 2008·Granted Dec 27, 2011·7 cites·12 claims
- 2578US9459584B2Image forming apparatusCANON KK·Filed 2014·Granted Oct 4, 2016·2 cites·46 claims
- 2678US6965743B2Developing apparatusCANON KK·Filed 2004·Granted Nov 15, 2005·16 cites·18 claims
- 2775US9116489B2Image forming apparatus for storing sampling values and method thereforCANON KK·Filed 2013·Granted Aug 25, 2015·2 cites·14 claims
- 2875US8750772B2Image forming apparatusDODA KAZUHIRO·Filed 2012·Granted Jun 10, 2014·1 cites·24 claims
- 2972US8036574B2Image forming apparatusCANON KK·Filed 2009·Granted Oct 11, 2011·3 cites·30 claims
- 3071US6721527B2Developing apparatus including a developer compression-avoidance feature and image forming apparatus using sameCANON KK·Filed 2002·Granted Apr 13, 2004·12 cites·13 claims
- 3170US11531294B2Image forming apparatus including a plurality of heat generating elementsCANON KK·Filed 2021·Granted Dec 20, 2022·0 cites·25 claims
- 3269US8437670B2Image forming apparatusKATAGIRI SHINJI·Filed 2011·Granted May 7, 2013·2 cites·14 claims
- 3367US9389564B2Image forming apparatus for performing registration and density correction controlCANON KK·Filed 2013·Granted Jul 12, 2016·1 cites·22 claims
- 3463US9213273B2Image forming apparatusCANON KK·Filed 2014·Granted Dec 15, 2015·0 cites·9 claims
- 3563US7415230B2Developing apparatus featuring an insulating or electrically floating jumping developer regulation memberCANON KK·Filed 2004·Granted Aug 19, 2008·8 cites·63 claims
- 3663US7221882B2Image forming apparatus and image formation control method in the sameCANON KK·Filed 2004·Granted May 22, 2007·8 cites·14 claims
- 3761US6871035B2Developing apparatusCANON KK·Filed 2003·Granted Mar 22, 2005·7 cites·13 claims
- 3859US11477377B2Imaging device and control methodSONY CORP·Filed 2020·Granted Oct 18, 2022·0 cites·23 claims
- 3959US10742884B2Imaging device and control methodSONY CORP·Filed 2019·Granted Aug 11, 2020·0 cites·16 claims
- 4058US2014105643A1Image forming apparatus having a brush memberCANON KK·Filed 2013·Application pending·0 cites
- 4156US9164454B2Image forming apparatus for performing registration and density correction controlCANON KK·Filed 2013·Granted Oct 20, 2015·0 cites·16 claims
- 4254US8532532B2Image forming apparatus having a controllable drive couplingSHIMURA MASARU·Filed 2011·Granted Sep 10, 2013·0 cites·20 claims
- 4353US6915088B2Image forming apparatusCANON KK·Filed 2003·Granted Jul 5, 2005·5 cites·20 claims
- 4453US6763203B2Image forming apparatus having transfer bias control functionCANON KK·Filed 2002·Granted Jul 13, 2004·5 cites·4 claims
- 4552US10321057B2Imaging device and control method thereforSONY CORP·Filed 2016·Granted Jun 11, 2019·0 cites·13 claims
- 4652US2015355588A1Image forming apparatus for performing registration and density correction controlCANON KK·Filed 2015·Application pending·0 cites
- 4751US9261842B2Image forming apparatus, density detecting apparatus, and density detecting methodCANON KK·Filed 2014·Granted Feb 16, 2016·0 cites·24 claims
- 4851US7068967B2Developing apparatus with separable multiple developer layers and image forming apparatus incorporating sameCANON KK·Filed 2004·Granted Jun 27, 2006·4 cites·31 claims
- 4950US9274448B2Image forming apparatus, positional deviation detection apparatus, and positional deviation detection methodCANON KK·Filed 2014·Granted Mar 1, 2016·0 cites·19 claims
- 5050US2009232530A1Image forming apparatusCANON KK·Filed 2009·Application pending·0 cites
Showing the top 50 of 58 patent records by PatentIndex Score.
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