Inventor · disambiguated record
Tetsuya Numata
Also filed as: NUMATA TETSUYA
64 granted patents·4 pending applications·238 citations·filing 2009–2025
98Inventor score
Top patents by PatentIndex Score
68 records- 0198US11709438B2Cartridge used in image forming apparatusCANON KK·Filed 2022·Granted Jul 25, 2023·4 cites·14 claims
- 0297US8521060B2Cartridge with a protecting member and a sealing member for sealing a developer supply openingNUMATA TETSUYA·Filed 2011·Granted Aug 27, 2013·33 cites·10 claims
- 0396US11480916B2Cartridge having toner removing sheet in contact with photosensitive drumCANON KK·Filed 2021·Granted Oct 25, 2022·3 cites·8 claims
- 0496US11112753B2Cartridge with a sheet to remove matter from a surface of a photosensitive drumCANON KK·Filed 2019·Granted Sep 7, 2021·7 cites·17 claims
- 0596US8670688B2Developing cartridge and process cartridge with grip portion of sealing member preventing mounting of cartridgeUENO TAKAHITO·Filed 2010·Granted Mar 11, 2014·22 cites·22 claims
- 0695US11294299B2Cartridge used in image forming apparatusCANON KK·Filed 2019·Granted Apr 5, 2022·6 cites·10 claims
- 0795US9442457B2Image forming apparatus with removable process unitsCANON KK·Filed 2015·Granted Sep 13, 2016·9 cites·16 claims
- 0895US9417604B2Image forming apparatusCANON KK·Filed 2015·Granted Aug 16, 2016·11 cites·12 claims
- 0995US8270879B2Electrophotographic image forming apparatusNUMATA TETSUYA·Filed 2009·Granted Sep 18, 2012·22 cites·8 claims
- 1094US12153355B2Cartridge used in image forming apparatusCANON KK·Filed 2023·Granted Nov 26, 2024·1 cites·9 claims
- 1194US11435689B2CartridgeCANON KK·Filed 2020·Granted Sep 6, 2022·3 cites·15 claims
- 1294US9471031B2Image forming apparatus with separate support members for removable cartridgesCANON KK·Filed 2015·Granted Oct 18, 2016·8 cites·20 claims
- 1394US8483589B2Developing device, developing cartridge, process cartridge and image forming apparatusUNEME TETSUSHI·Filed 2010·Granted Jul 9, 2013·13 cites·12 claims
- 1492US2025334924A1Cartridge and image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 1591US11762326B2CartridgeCANON KK·Filed 2022·Granted Sep 19, 2023·1 cites·9 claims
- 1690US11209773B2Cartridge and image forming apparatusCANON KK·Filed 2020·Granted Dec 28, 2021·2 cites·17 claims
- 1790USD863419SFlange coupling for process cartridge for image forming apparatusCANON KK·Filed 2018·Granted Oct 15, 2019·34 cites·1 claims
- 1889US8478161B2Electrophotographic image forming apparatus with locking member for spacing components of the apparatus and preventing movement of components of the apparatusNUMATA TETSUYA·Filed 2010·Granted Jul 2, 2013·6 cites·2 claims
- 1988US8768211B2Developing cartridge having a detachable coverHAYASHI NAOKI·Filed 2010·Granted Jul 1, 2014·5 cites·19 claims
- 2088US8472838B2Electrophotographic image forming apparatus with spacing member for spacing components of the apparatusNUMATA TETSUYA·Filed 2010·Granted Jun 25, 2013·5 cites·5 claims
- 2188US2025102996A1Development device, process cartridge, and image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 2287US9026001B2Image bearing member unit and image forming apparatusCANON KK·Filed 2013·Granted May 5, 2015·4 cites·22 claims
- 2387US2025004417A1Development device, process cartridge, and image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 2486US12487556B2Cartridge and image forming apparatusCANON KK·Filed 2024·Granted Dec 2, 2025·0 cites·9 claims
- 2586US10606210B2Development device, process cartridge, and image forming apparatusCANON KK·Filed 2019·Granted Mar 31, 2020·1 cites·3 claims
- 2685US2025044721A1Cartridge used in image forming apparatusCANON KK·Filed 2024·Application pending·0 cites
- 2783US12158722B2Cartridge and image forming apparatusCANON KK·Filed 2023·Granted Dec 3, 2024·0 cites·13 claims
- 2883US12117763B2Development device, process cartridge, and image forming apparatusCANON KK·Filed 2023·Granted Oct 15, 2024·0 cites·14 claims
- 2982US9377752B2Image forming apparatus with image bearing member protectionCANON KK·Filed 2015·Granted Jun 28, 2016·2 cites·28 claims
- 3080US12405565B2Cartridge including a developer storage unit for storing developerCANON KK·Filed 2023·Granted Sep 2, 2025·0 cites·8 claims
- 3180US9146526B2Unit, cleaning unit, process cartridge, and image forming apparatusCANON KK·Filed 2013·Granted Sep 29, 2015·2 cites·28 claims
- 3278US11841647B2Cartridge and developing cartridge including a frame and sheet member provided at end side of the frameCANON KK·Filed 2022·Granted Dec 12, 2023·0 cites·11 claims
- 3378US11703795B2Development device, process cartridge, and image forming apparatusCANON KK·Filed 2022·Granted Jul 18, 2023·0 cites·8 claims
- 3477USD845384SProcess cartridge for image forming apparatusCANON KK·Filed 2017·Granted Apr 9, 2019·17 cites·1 claims
- 3576US11733644B2Cartridge and image forming apparatusCANON KK·Filed 2021·Granted Aug 22, 2023·0 cites·18 claims
- 3675US9618873B2Image forming apparatusCANON KK·Filed 2015·Granted Apr 11, 2017·1 cites·18 claims
- 3774US10248077B2Cartridge and cover memberCANON KK·Filed 2016·Granted Apr 2, 2019·1 cites·9 claims
- 3874US9348264B2Unit, cleaning unit, process cartridge, and image forming apparatusCANON KK·Filed 2015·Granted May 24, 2016·1 cites·19 claims
- 3973US8417152B2Process cartridge and image forming apparatusTAKEYAMA YOSHIFUMI·Filed 2009·Granted Apr 9, 2013·4 cites·12 claims
- 4070US11287772B2Development device, process cartridge, and image forming apparatusCANON KK·Filed 2020·Granted Mar 29, 2022·0 cites·12 claims
- 4170US9454124B2Image forming apparatusCANON KK·Filed 2015·Granted Sep 27, 2016·1 cites·20 claims
- 4270US9389578B2Image-forming apparatusCANON KK·Filed 2015·Granted Jul 12, 2016·1 cites·20 claims
- 4370US8989623B2Image forming apparatus and cartridgeCANON KK·Filed 2013·Granted Mar 24, 2015·1 cites·16 claims
- 4469US10254710B2Development device, process cartridge, and image forming apparatusCANON KK·Filed 2017·Granted Apr 9, 2019·0 cites·12 claims
- 4566US10401786B2Image forming apparatus and cartridge used for the sameCANON KK·Filed 2018·Granted Sep 3, 2019·0 cites·10 claims
- 4664US9996050B2Image forming apparatus and cartridge used for the sameCANON KK·Filed 2017·Granted Jun 12, 2018·0 cites·12 claims
- 4763US10691043B2Supporting unit, developer container, developing device, photosensitive member unit, process cartridge and manufacturing method of the supporting unitCANON KK·Filed 2019·Granted Jun 23, 2020·0 cites·17 claims
- 4861US10222736B2Image forming apparatusCANON KK·Filed 2017·Granted Mar 5, 2019·0 cites·17 claims
- 4960US10719030B2Manufacturing method of cartridge and cartridgeCANON KK·Filed 2019·Granted Jul 21, 2020·0 cites·20 claims
- 5060US10203655B2Image forming apparatusCANON KK·Filed 2017·Granted Feb 12, 2019·0 cites·27 claims
Showing the top 50 of 68 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →