Inventor · disambiguated record
Ryo Sugiyama
Also filed as: SUGIYAMA RYO
26 granted patents·8 pending applications·148 citations·filing 2013–2025
95Inventor score
Top patents by PatentIndex Score
34 records- 0197US9952532B2Developing apparatus, electrophotographic process cartridge, and electrophotographic image forming apparatusCANON KK·Filed 2017·Granted Apr 24, 2018·20 cites·9 claims
- 0295US10942471B2Electrophotographic member having a surface layer with a cross-linked urethane resin-containing matrix, process cartridge, and apparatusCANON KK·Filed 2020·Granted Mar 9, 2021·8 cites·12 claims
- 0395US10678161B2Electrophotographic member having elastic layer with elastic modulus of 0.5 to 3.0 MPA and coating layer with elastic modulus of 5.0 to 100 MPACANON KK·Filed 2019·Granted Jun 9, 2020·10 cites·16 claims
- 0495US10310447B2Electrophotographic member, process cartridge, and electrophotographic image forming apparatusCANON KK·Filed 2018·Granted Jun 4, 2019·14 cites·10 claims
- 0595US8655238B2Developing memberCANON KK·Filed 2013·Granted Feb 18, 2014·23 cites·6 claims
- 0694US10571825B1Electrophotographic member, electrophotographic process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2019·Granted Feb 25, 2020·7 cites·14 claims
- 0793US10976683B2Electrophotographic member, electrophotographic process cartridge, and electrophotographic image forming apparatusCANON KK·Filed 2019·Granted Apr 13, 2021·7 cites·14 claims
- 0893US10712684B2Developing roller, electrophotographic process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2019·Granted Jul 14, 2020·5 cites·15 claims
- 0992US11650516B2Developing apparatus, electrophotography process cartridge, and electrophotographic image forming apparatusCANON KK·Filed 2022·Granted May 16, 2023·2 cites·12 claims
- 1092US10635019B2Developing roller, electrophotographic process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2019·Granted Apr 28, 2020·6 cites·11 claims
- 1192US9921518B2Developing roller, with conductive elastic layer having exposed protrusions, cartridge and apparatusCANON KK·Filed 2017·Granted Mar 20, 2018·18 cites·11 claims
- 1291US10705449B2Developing member, electrophotographic process cartridge, and electrophotographic image forming apparatusCANON KK·Filed 2019·Granted Jul 7, 2020·4 cites·8 claims
- 1390US10831127B2Developing member, electrophotographic process cartridge, and electrophotographic image forming apparatusCANON KK·Filed 2019·Granted Nov 10, 2020·4 cites·10 claims
- 1489US10831126B2Developing roller having crown-shaped electro-conductive layer with outer surface providing electrically insulating first regions adjacent to second regions having higher conductivityCANON KK·Filed 2019·Granted Nov 10, 2020·4 cites·12 claims
- 1589US10078291B2Developing apparatus having a projecting regulating member and process cartridgeCANON KK·Filed 2017·Granted Sep 18, 2018·4 cites·8 claims
- 1688US10935903B2Developing roller, process cartridge and image forming apparatusCANON KK·Filed 2019·Granted Mar 2, 2021·3 cites·7 claims
- 1788US10642186B2Developing member having outer surface with independent electrically insulating domains, electrophotographic process cartridge, and electrophotographic image forming apparatusCANON KK·Filed 2019·Granted May 5, 2020·3 cites·18 claims
- 1885US11465383B2Electrophotographic member, electrophotographic process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2019·Granted Oct 11, 2022·2 cites·10 claims
- 1984US10895824B2Developing roller, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2020·Granted Jan 19, 2021·2 cites·11 claims
- 2075US10073374B2Developing apparatus having multi-part regulating member, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2017·Granted Sep 11, 2018·1 cites·11 claims
- 2175US9989883B2Developing apparatus, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2017·Granted Jun 5, 2018·1 cites·8 claims
- 2273US2025321513A1Developing roller, process cartridge, and electrophotographic image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 2365US2025319373A1Table tennis rubber sheet and table tennis racketCANON KK·Filed 2025·Application pending·0 cites
- 2465US2025381459A1Table tennis rubber sheet and table tennis paddleCANON KK·Filed 2025·Application pending·0 cites
- 2564US2025313167A1Mode setting value set generation deviceTOYOTA MOTOR CO LTD·Filed 2025·Application pending·0 cites
- 2661US10747140B2Developing apparatus, developer carrying member, process cartridge, and image forming apparatusCANON KK·Filed 2019·Granted Aug 18, 2020·0 cites·25 claims
- 2758US2025303988A1Generation device for setting value setTOYOTA MOTOR CO LTD·Filed 2025·Application pending·0 cites
- 2857US2025269810A1Control device and vehicleTOYOTA MOTOR CO LTD·Filed 2025·Application pending·0 cites
- 2955US10895823B2Developing roller, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2020·Granted Jan 19, 2021·0 cites·7 claims
- 3053US12147172B2Developing device, cleaning method, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2023·Granted Nov 19, 2024·0 cites·11 claims
- 3149US2013266339A1Electro-conductive member, process cartridge, and electrophotographic apparatusCANON KK·Filed 2013·Application pending·0 cites
- 3247US12306572B2Process cartridgeCANON KK·Filed 2021·Granted May 20, 2025·0 cites·6 claims
- 3341US2013164038A1Developing member and production method therefor, and electrophotographic image forming apparatusCANON KK·Filed 2013·Application pending·0 cites
- 3435US9971276B2Developing member, method of producing developing member, process cartridge, and electrophotographic apparatusCANON KK·Filed 2016·Granted May 15, 2018·0 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →