Inventor · disambiguated record
Masaki Ojima
Also filed as: OJIMA MASAKI
48 granted patents·2 pending applications·743 citations·filing 1990–2025
98Inventor score
Top patents by PatentIndex Score
50 records- 0199US10996620B2Process cartridge and image forming apparatusCANON KK·Filed 2020·Granted May 4, 2021·8 cites·20 claims
- 0297US11846910B2Process cartridge and image forming apparatusCANON KK·Filed 2022·Granted Dec 19, 2023·2 cites·20 claims
- 0397US11567447B2Process cartridge and image forming apparatusCANON KK·Filed 2022·Granted Jan 31, 2023·3 cites·9 claims
- 0497US11327432B2Process cartridge and image forming apparatusCANON KK·Filed 2021·Granted May 10, 2022·3 cites·15 claims
- 0595US12099325B2Process cartridge and image forming apparatusCANON KK·Filed 2023·Granted Sep 24, 2024·1 cites·12 claims
- 0693US5353104ADefining member for defining thickness of one-component developer and developing device equipped with itCANON KK·Filed 1993·Granted Oct 4, 1994·51 cites·27 claims
- 0792US5570166ADeveloping apparatus that applies voltage to developer layer thickness regulating memberCANON KK·Filed 1994·Granted Oct 29, 1996·46 cites·18 claims
- 0892US5519472ADeveloping apparatus using elastic bladeCANON KK·Filed 1994·Granted May 21, 1996·46 cites·17 claims
- 0992US2025334924A1Cartridge and image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 1091US8521041B2Image forming apparatus with controller controlling an image forming operationKOJIMA KATSUHIRO·Filed 2011·Granted Aug 27, 2013·9 cites·13 claims
- 1191US5765077ACharging member, charging device and process cartridge detachably mountable to image forming apparatusCANON KK·Filed 1996·Granted Jun 9, 1998·52 cites·148 claims
- 1290US11209773B2Cartridge and image forming apparatusCANON KK·Filed 2020·Granted Dec 28, 2021·2 cites·17 claims
- 1390US7058338B2Image forming apparatus with reciprocating dispersing featureCANON KK·Filed 2005·Granted Jun 6, 2006·10 cites·7 claims
- 1487US6188852B1Process cartridge and image forming apparatus on which the process cartridge is mountableCANON KK·Filed 1997·Granted Feb 13, 2001·44 cites·11 claims
- 1586US12487556B2Cartridge and image forming apparatusCANON KK·Filed 2024·Granted Dec 2, 2025·0 cites·9 claims
- 1686US5682585ADeveloping apparatus generating electric field between developer carrying member and developer layer regulating memberCANON KK·Filed 1994·Granted Oct 28, 1997·32 cites·18 claims
- 1785US7286788B2Image forming apparatusCANON KK·Filed 2005·Granted Oct 23, 2007·7 cites·15 claims
- 1885US5618647AMagnetic toner and image forming methodCANON KK·Filed 1995·Granted Apr 8, 1997·38 cites·57 claims
- 1983US12158722B2Cartridge and image forming apparatusCANON KK·Filed 2023·Granted Dec 3, 2024·0 cites·13 claims
- 2083US6928253B2Image forming apparatus including toner charging memberCANON KK·Filed 2003·Granted Aug 9, 2005·18 cites·27 claims
- 2180US7454160B2Developing apparatus including a cylindrical developer carrying member conveying a magnetic mono-component developerCANON KK·Filed 2007·Granted Nov 18, 2008·6 cites·3 claims
- 2280US6807384B2Image forming apparatusCANON KK·Filed 2003·Granted Oct 19, 2004·19 cites·70 claims
- 2379US6922539B2Process cartridge and image forming apparatus in which the contact width of a developer charger with an image bearing member is greater than or equal to the sum of the developing width of developing means and the width of movement of the developer chargerCANON KK·Filed 2003·Granted Jul 26, 2005·18 cites·39 claims
- 2479US5124802AElectrostatic lasar printer with a short side length of a modulation area formed by pulse width modulation set relative to a detected toner particle sizeCANON KK·Filed 1990·Granted Jun 23, 1992·47 cites·20 claims
- 2578US6963707B2Image forming apparatus including first and second auxiliary residual developer charging featuresCANON KK·Filed 2003·Granted Nov 8, 2005·14 cites·21 claims
- 2676US11733644B2Cartridge and image forming apparatusCANON KK·Filed 2021·Granted Aug 22, 2023·0 cites·18 claims
- 2774US6226466B1Image forming apparatus that performs image density controlCANON KK·Filed 1999·Granted May 1, 2001·23 cites·25 claims
- 2873US5412480AImage forming apparatus with fixer temperature controlCANON KK·Filed 1994·Granted May 2, 1995·15 cites·20 claims
- 2972US7254347B2Electrophotographic image forming apparatus and unitCANON KK·Filed 2005·Granted Aug 7, 2007·4 cites·16 claims
- 3072US6108105ADot image output apparatusCANON KK·Filed 1995·Granted Aug 22, 2000·38 cites·36 claims
- 3172US5205979AAutomatic controlling device of burners of a shaft furnace utilizing fuzzy logicSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Apr 27, 1993·20 cites·1 claims
- 3268US5140349ARecording apparatusCANON KK·Filed 1991·Granted Aug 18, 1992·27 cites·83 claims
- 3364US6134025ADot image data output apparatusCANON KK·Filed 1995·Granted Oct 17, 2000·25 cites·10 claims
- 3464US5666606AImage forming apparatus comprising contact type charging memberCANON KK·Filed 1996·Granted Sep 9, 1997·16 cites·10 claims
- 3563US7627269B2Image forming apparatus with charging member cleaning capabilitiesCANON KK·Filed 2006·Granted Dec 1, 2009·2 cites·18 claims
- 3660US5565995ASystem for correcting a pulse-width-modulated signal in a recording apparatusCANON KK·Filed 1995·Granted Oct 15, 1996·21 cites·24 claims
- 3758US5463473ASiphen for correcting a pulse-width modulated signal in a recording apparatusCANON KK·Filed 1993·Granted Oct 31, 1995·14 cites·17 claims
- 3858US5274402AImage forming apparatus with fixer temperature controlCANON KK·Filed 1991·Granted Dec 28, 1993·9 cites·6 claims
- 3957US5781835ADeveloping device comprising a magnetic memberCANON KK·Filed 1995·Granted Jul 14, 1998·12 cites·10 claims
- 4055US5488487AImage forming apparatus, and modulating method thereinCANON KK·Filed 1993·Granted Jan 30, 1996·12 cites·14 claims
- 4147US5694158AImage forming apparatus with image carrier and sheet feed drive controlCANON KK·Filed 1995·Granted Dec 2, 1997·12 cites·20 claims
- 4247US5512929AImage forming apparatus with fixer temperature controlCANON KK·Filed 1995·Granted Apr 30, 1996·6 cites·21 claims
- 4343US6741824B2Charging system, process cartridge and image forming apparatusCANON KK·Filed 2003·Granted May 25, 2004·2 cites·21 claims
- 4442US8995900B2Cleaning member, cleaning device, process cartridge and image forming apparatusSHINDO KENJI·Filed 2012·Granted Mar 31, 2015·0 cites·33 claims
- 4540US8078071B2Image forming apparatus and control method of the image forming apparatusKOJIMA KATSUHIRO·Filed 2007·Granted Dec 13, 2011·0 cites·5 claims
- 4635US2010260511A1Image forming apparatusCANON KK·Filed 2010·Application pending·0 cites
- 4734US6477319B1Image recording apparatus which sends charasteristic/correction signals whenever new look-up table are selected or a pre-selected number of pages have been printedCANON KK·Filed 1999·Granted Nov 5, 2002·2 cites·8 claims
- 4834US5982983AImage recording system accommodating various output devicesCANON KK·Filed 1995·Granted Nov 9, 1999·2 cites·20 claims
- 4934US5859948AImages processing apparatus for controlling binarized multi-value image data to convert pulse widths differently in at least two modesCANON KK·Filed 1995·Granted Jan 12, 1999·2 cites·12 claims
- 5032US5754188AData processing apparatusCANON KK·Filed 1993·Granted May 19, 1998·3 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →