Inventor
YAMADA MASAKI
JP187 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA MASAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
31 patentsUS7799398B2Sep 21, 2010
Developing member and electrophotographic image forming apparatus
CANON KK57 citations98
US10649350B2May 12, 2020
Electrophotographic member, process cartridge and electrophotographic apparatus
CANON KK24 citations94
US10108129B2Oct 23, 2018
Member for electrophotography and method of producing the member, process cartridge, and electrophotographic apparatus
CANON KK35 citations94
US10018934B2Jul 10, 2018
Electrophotographic member, process cartridge, and electrophotographic apparatus
CANON KK35 citations94
US9977353B2May 22, 2018
Electrophotographic member, process cartridge and electrophotographic image forming apparatus
CANON KK35 citations94
US9964914B2May 8, 2018
Electrophotographic member, process cartridge, and electrophotographic apparatus
CANON KK36 citations94
US9811009B2Nov 7, 2017
Electrophotographic member, process cartridge and electrophotographic apparatus
CANON KK39 citations94
US9665028B2May 30, 2017
Electrophotographic member, process cartridge and electrophotographic apparatus
CANON KK42 citations94
US9639009B2May 2, 2017
Electrophotographic member, process cartridge, and electrophotographic apparatus
CANON KK44 citations94
US9599913B2Mar 21, 2017
Electrophotographic member, process cartridge and electrophotographic apparatus
CANON KK43 citations94
US9581931B2Feb 28, 2017
Electrophotographic member, process cartridge, and electrophotographic apparatus
CANON KK46 citations94
US9581934B2Feb 28, 2017
Developing apparatus, developing method, image forming apparatus, and image forming method
CANON KK22 citations94
US9442416B2Sep 13, 2016
Image-forming apparatus, image-forming method, developing apparatus, and developing method
CANON KK47 citations94
US9354545B2May 31, 2016
Developing apparatus, developing method, image-forming apparatus, and image-forming method
CANON KK45 citations94
US9348246B2May 24, 2016
Developing apparatus, developing method, image forming apparatus and image forming method
CANON KK45 citations94
US8846287B2Sep 30, 2014
Electrophotographic member, process cartridge and electrophotographic apparatus
CANON KK36 citations94
US8837985B2Sep 16, 2014
Electrophotographic member and electrophotographic apparatus
CANON KK36 citations94
US8798508B2Aug 5, 2014
Developing member, process cartridge, and electrophotographic apparatus
CANON KK38 citations94
US8655222B2Feb 18, 2014
Developing member, process cartridge, and electrophotographic image forming apparatus
CANON KK35 citations94
US9442419B2Sep 13, 2016
Developing apparatus, developing method, image forming apparatus, and image forming method
CANON KK22 citations92
US8874007B2Oct 28, 2014
Developing unit and electrophotographic image forming apparatus
CANON KK31 citations92
US8774677B2Jul 8, 2014
Developing member, process cartridge and electrophotographic image forming apparatus
CANON KK23 citations92
US8768226B2Jul 1, 2014
Developer support member, electrophotographic process cartridge and electrophotographic image forming apparatus
CANON KK28 citations92
US8768227B2Jul 1, 2014
Developing member including elastic member containing cured product of addition-curing silicone rubber mixture, processing cartridge including the developing member, and electrophotographic apparatus including the developing member
CANON KK31 citations92
US8706011B2Apr 22, 2014
Developing member, process cartridge, and electrophotographic apparatus
CANON KK30 citations92
US7797833B2Sep 21, 2010
Developing roller and method of producing the roller, process cartridge, and electrophotographic image-forming apparatus
CANON KK44 citations92
US11307509B2Apr 19, 2022
Electro-conductive member, method for producing same, process cartridge and electrophotographic image forming apparatus
CANON KK8 citations85
US11112748B2Sep 7, 2021
Developing member, process cartridge and electrophotographic apparatus
CANON KK9 citations85
US10379460B2Aug 13, 2019
Electrophotographic member, process cartridge, and electrophotographic apparatus
CANON KK10 citations84
US10331054B2Jun 25, 2019
Electrophotographic member, process cartridge and electrophotographic image forming apparatus
CANON KK12 citations84
US9977359B2May 22, 2018
Electrophotographic member, method of producing the same, process cartridge, and electrophotographic apparatus
CANON KK16 citations84
MITSUBISHI ELECTRIC CORP
4 patentsUS7485987B2Feb 3, 2009
Power converting device
MITSUBISHI ELECTRIC CORP198 citations99
US7596008B2Sep 29, 2009
Power conversion apparatus
MITSUBISHI ELECTRIC CORP193 citations98
US7602626B2Oct 13, 2009
Power conversion apparatus
MITSUBISHI ELECTRIC CORP123 citations97
US10044278B2Aug 7, 2018
Power conversion device
MITSUBISHI ELECTRIC CORP16 citations84
SONY CORP
3 patentsFUJITSU GENERAL LTD
3 patentsTOSHIBA KK
2 patentsISHII TORU
1 patentYAMADA MASAKI
1 patentFUJI XEROX CO LTD
1 patentKABUSHIKI KAIHSA TOSHIBA
1 patentCBS SONY RECORDS INC
1 patentRIKEN KK
1 patentOMRON TATEISI ELECTRONICS CO
1 patentShowing the top 50 of 187 patents by PatentIndex Score.