Inventor
SAKON YOHTA
JP59 patents
⚠️ This page may combine multiple inventors who share the name “SAKON YOHTA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
25 patentsUS6030733AFeb 29, 2000
Electrophotographic photoconductor with water vapor permeability
RICOH KK133 citations99
US5077142ADec 31, 1991
Electroluminescent devices
RICOH KK384 citations99
US6641964B2Nov 4, 2003
Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor
RICOH KK80 citations98
US6562529B1May 13, 2003
Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same
RICOH KK85 citations98
US6363237B1Mar 26, 2002
Unit for imparting lubricity to electrophotographic photoconductor, electrophotographic image formation apparatus including the unit, and image formation method using the apparatus
RICOH KK81 citations98
US6151468ANov 21, 2000
Electrophotographic photoconductor
RICOH KK105 citations98
US6060205AMay 9, 2000
Image forming apparatus
RICOH KK120 citations98
US6576388B2Jun 10, 2003
Multilayer electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge using the photoreceptor
RICOH KK68 citations96
US6521386B1Feb 18, 2003
Electrophotographic photoreceptor and electrophotographic image forming method and apparatus using the photoreceptor
RICOH KK60 citations96
US6160977ADec 12, 2000
Image forming apparatus and device for applying a lubricant to an image
RICOH KK72 citations96
US5932362AAug 3, 1999
Organic electroluminescent element
RICOH KK44 citations96
US5656401AAug 12, 1997
Electroluminescent device comprising oxadiazole compounds luminescent material, oxadiazole compounds for the device, and method of producing oxadiazole compounds
RICOH KK76 citations96
US5610309AMar 11, 1997
Electroluminescent device comprising oxadiazole compounds luminescent material, oxadiazole compounds for the device, and method of producing oxadiazole compounds
RICOH KK63 citations96
US5597925AJan 28, 1997
Method of producing oxadiazole compounds
RICOH KK67 citations96
US5420288AMay 30, 1995
Electroluminescent device comprising oxadiazole compounds luminescent material, oxadiazole compounds for the device, and method of producing oxadiazole compounds
RICOH KK83 citations96
US5153073AOct 6, 1992
Electroluminescent device
RICOH KK80 citations96
US6558862B2May 6, 2003
Electrophotographic photoreceptor and image forming apparatus using the photoreceptor
RICOH KK70 citations95
US6686114B2Feb 3, 2004
Electrophotographic image forming method and apparatus
RICOH KK47 citations93
US6516169B2Feb 4, 2003
Electrophotographic image forming apparatus having a gap between photoreceptor and charger, and process cartridge therefor
RICOH KK34 citations93
US5702833ADec 30, 1997
Organic electroluminescent element
RICOH KK40 citations93
US6844124B2Jan 18, 2005
Electrophotographic photoreceptor, method for manufacturing the photoreceptor, and image forming method and apparatus using the photoreceptor
RICOH KK31 citations92
US6706459B2Mar 16, 2004
Electrophotographic drum-shaped photoconductor and image forming method and apparatus using the same
RICOH KK22 citations92
US5118986AJun 2, 1992
Electroluminescent device
RICOH KK36 citations92
US5093210AMar 3, 1992
Electroluminescent device
RICOH KK32 citations92
US7153621B2Dec 26, 2006
Electrophotographic photoreceptor and image forming apparatus using the photoreceptor
RICOH KK2 citations62
RICOH CO LTD
6 patentsUS8369769B2Feb 5, 2013
Cleaning blade, image forming apparatus, and process cartridge
RICOH CO LTD7 citations84
US11179940B2Nov 23, 2021
Liquid discharging device and wiping method
RICOH CO LTD4 citations72
US11130343B2Sep 28, 2021
Wiping device, liquid discharging device, and wiping method
RICOH CO LTD2 citations72
US9031491B2May 12, 2015
Image forming apparatus and process cartridge
RICOH CO LTD3 citations62
US11780230B2Oct 10, 2023
Wiper, wiping device, liquid discharge apparatus, and wiping method
RICOH CO LTD0 citations61
US12030090B2Jul 9, 2024
Wiping member, wiping method, and image forming apparatus
RICOH CO LTD0 citations60
SAKON YOHTA
4 patentsUS8913944B2Dec 16, 2014
Cleaning blade, and image forming apparatus and process cartridge using the cleaning blade
SAKON YOHTA4 citations72
US9383713B2Jul 5, 2016
Cleaning blade, image forming apparatus, and process cartridge
SAKON YOHTA3 citations71
US8897690B2Nov 25, 2014
Cleaning blade, image forming apparatus and process cartridge
SAKON YOHTA4 citations71
US10889119B2Jan 12, 2021
Wiping device, wiping member, liquid discharging device, and wiping method
SAKON YOHTA0 citations60
GOHDA SHOHEI
3 patentsUS9588479B2Mar 7, 2017
Image forming apparatus and process cartridge
GOHDA SHOHEI2 citations71
US9052631B2Jun 9, 2015
Image forming apparatus, process cartridge, and image forming method
GOHDA SHOHEI4 citations71
US9146524B2Sep 29, 2015
Cleaning blade, image forming apparatus, and process cartridge
GOHDA SHOHEI3 citations60
SAKAGUCHI HIROMI
3 patentsUS9395676B2Jul 19, 2016
Cleaning blade having an elastic body of segmented hardnesses, and image forming apparatus and process cartridge including the cleaning blade
SAKAGUCHI HIROMI3 citations71
US9342031B2May 17, 2016
Cleaning blade, image forming apparatus and process cartridge
SAKAGUCHI HIROMI1 citations50
US9244424B1Jan 26, 2016
Cleaning blade, image forming apparatus and process cartridge
SAKAGUCHI HIROMI1 citations50
OHMORI MASAHIRO
2 patentsTOYAMA KAORI
2 patentsIKUNO HIROSHI
1 patentTODA NAOHIRO
1 patentFUJII ICHIROH
1 patentATAKE Takumi
1 patentJURI KEIICHIRO
1 patentShowing the top 50 of 59 patents by PatentIndex Score.