Inventor · disambiguated record
Ryuya Yamazaki
Also filed as: YAMAZAKI RYUYA
51 granted patents·1 pending application·114 citations·filing 2008–2025
97Inventor score
Technology areasG03G
Top patents by PatentIndex Score
52 records- 0197US9323214B2Developing cartridge provided with cover, and process cartridge having the sameITABASHI NAO·Filed 2012·Granted Apr 26, 2016·12 cites·18 claims
- 0296US10048645B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2018·Granted Aug 14, 2018·7 cites·7 claims
- 0396US9891581B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2016·Granted Feb 13, 2018·7 cites·14 claims
- 0496US9529302B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2016·Granted Dec 27, 2016·7 cites·7 claims
- 0595US2025362642A1Developing cartridge provided with coverBROTHER IND LTD·Filed 2025·Application pending·0 cites
- 0691US8855526B2Developing device provided with seal configured to prevent developer leakageITO YOSHINORI·Filed 2012·Granted Oct 7, 2014·5 cites·17 claims
- 0790US7742726B2Developer cartridge, developing unit and image forming apparatus including the sameBROTHER IND LTD·Filed 2008·Granted Jun 22, 2010·12 cites·12 claims
- 0886US12416896B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2023·Granted Sep 16, 2025·0 cites·11 claims
- 0985US9696682B2Image forming apparatus and drum unit with conveying unit for conveying toner removed from photosensitive drumBROTHER IND LTD·Filed 2016·Granted Jul 4, 2017·2 cites·51 claims
- 1083US9465329B2Cleaning unit and image forming apparatus provided with the sameBROTHER IND LTD·Filed 2015·Granted Oct 11, 2016·2 cites·18 claims
- 1183USD718381SToner cartridgeITABASHI NAO·Filed 2013·Granted Nov 25, 2014·27 cites·1 claims
- 1282US8565637B2Image forming device having retaining member retaining toner cartridgesITABASHI NAO·Filed 2011·Granted Oct 22, 2013·3 cites·19 claims
- 1382US8238783B2Multi-function printerYAMAZAKI RYUYA·Filed 2008·Granted Aug 7, 2012·6 cites·17 claims
- 1481US10228650B2Image forming apparatus and drum unit thereof provided with drum cleanerBROTHER IND LTD·Filed 2015·Granted Mar 12, 2019·2 cites·20 claims
- 1580US9964915B2Image forming apparatus and drum unit with conveying unit for conveying toner removed from photosensitive drumBROTHER IND LTD·Filed 2017·Granted May 8, 2018·1 cites·24 claims
- 1679US11733646B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2021·Granted Aug 22, 2023·0 cites·16 claims
- 1779US11644790B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2021·Granted May 9, 2023·0 cites·13 claims
- 1879US10620580B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2019·Granted Apr 14, 2020·0 cites·15 claims
- 1977US11669043B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2021·Granted Jun 6, 2023·0 cites·18 claims
- 2075US10303112B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2018·Granted May 28, 2019·0 cites·19 claims
- 2174US10901361B2Developing cartridge provided with coverBROTHER IND LTD·Filed 2020·Granted Jan 26, 2021·0 cites·15 claims
- 2274US8634744B2Image forming device and toner cartridge mounted thereinNISHIYAMA HIDESHI·Filed 2011·Granted Jan 21, 2014·2 cites·20 claims
- 2373US8204410B2Developer cartridge, developing device, process cartridge and image forming apparatusYAMAZAKI RYUYA·Filed 2008·Granted Jun 19, 2012·4 cites·10 claims
- 2469US8837993B2Developing device capable of precisely positioning thickness-regulating memberYAMAZAKI RYUYA·Filed 2012·Granted Sep 16, 2014·1 cites·19 claims
- 2569US8208839B2Developer cartridge, developing device, and process cartridgeMASE SOICHIRO·Filed 2008·Granted Jun 26, 2012·3 cites·12 claims
- 2667US8995872B2Developing device provided with developing roller and thickness regulating bladeITO YOSHINORI·Filed 2012·Granted Mar 31, 2015·1 cites·8 claims
- 2766US8792802B2Developing device for preventing toner leakageITO YOSHINORI·Filed 2012·Granted Jul 29, 2014·1 cites·14 claims
- 2864US8805250B2Blade pressing member and developer cartridgeTAKAMI TAKESHI·Filed 2012·Granted Aug 12, 2014·1 cites·19 claims
- 2963US10061258B2Drum unitBROTHER IND LTD·Filed 2017·Granted Aug 28, 2018·0 cites·20 claims
- 3062US9581955B2Drum unitBROTHER IND LTD·Filed 2016·Granted Feb 28, 2017·0 cites·19 claims
- 3162US9298133B2Developing device provided with seal configured to prevent developer leakageBROTHER IND LTD·Filed 2014·Granted Mar 29, 2016·0 cites·11 claims
- 3259US8706004B2Image forming apparatus having toner cartridge with movable shutterKAMIMURA NAOYA·Filed 2013·Granted Apr 22, 2014·0 cites·23 claims
- 3358US9417596B2Drum unitBROTHER IND LTD·Filed 2015·Granted Aug 16, 2016·0 cites·24 claims
- 3456US8588645B2Multi-function printerYAMAZAKI RYUYA·Filed 2012·Granted Nov 19, 2013·0 cites·16 claims
- 3556US8331829B2Developer cartridge, developing unit and image forming apparatus including the sameMASE SOICHIRO·Filed 2008·Granted Dec 11, 2012·1 cites·13 claims
- 3654US8457523B2Image forming apparatus having toner cartridge with movable shutterKAMIMURA NAOYA·Filed 2011·Granted Jun 4, 2013·0 cites·10 claims
- 3752USD718378SPhotosensitive drum unitITABASHI NAO·Filed 2013·Granted Nov 25, 2014·7 cites·1 claims
- 3851US9239564B2Drum unit capable of improving positioning precision of cleaner with respect to photosensitive drumBROTHER IND LTD·Filed 2015·Granted Jan 19, 2016·0 cites·18 claims
- 3944US9141033B2CartridgeITABASHI NAO·Filed 2013·Granted Sep 22, 2015·0 cites·7 claims
- 4044US8126377B2Developer cartridge, developing device, and process cartridgeTAKAGI TAKEYUKI·Filed 2008·Granted Feb 28, 2012·0 cites·13 claims
- 4143US9760058B2Image forming apparatus providing stable engagement between gears upon attachment of drum unit to housingBROTHER IND LTD·Filed 2016·Granted Sep 12, 2017·0 cites·12 claims
- 4243US8948648B2Developing device provided with sealing members assembled to thickness-regulation memberITO YOSHINORI·Filed 2011·Granted Feb 3, 2015·0 cites·10 claims
- 4343US8036579B2Developing device and developer cartridgeBROTHER IND LTD·Filed 2008·Granted Oct 11, 2011·0 cites·19 claims
- 4442US8989622B2Developer-accommodating vessel and developing deviceSATO SHOUGO·Filed 2010·Granted Mar 24, 2015·0 cites·37 claims
- 4541US9804553B2Image forming apparatus and drum unitBROTHER IND LTD·Filed 2016·Granted Oct 31, 2017·0 cites·37 claims
- 4641US9354599B2Drum unit capable of grounding photosensitive drum and cleaning memberBROTHER IND LTD·Filed 2015·Granted May 31, 2016·0 cites·15 claims
- 4740US9020389B2Developing device for preventing toner leakageITO YOSHINORI·Filed 2012·Granted Apr 28, 2015·0 cites·10 claims
- 4840US8019250B2Developer cartridge having inner and outer casingsBROTHER IND LTD·Filed 2010·Granted Sep 13, 2011·0 cites·12 claims
- 4939US9760056B2Image forming apparatus and drum unitBROTHER IND LTD·Filed 2016·Granted Sep 12, 2017·0 cites·20 claims
- 5039US8385774B2Image forming apparatus having toner cartridgeBROTHER IND LTD·Filed 2011·Granted Feb 26, 2013·0 cites·13 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →