Inventor
WATANABE YOHICHIROH
JP55 patents
⚠️ This page may combine multiple inventors who share the name “WATANABE YOHICHIROH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
31 patentsUS6363229B1Mar 26, 2002
Full-color toner image fixing method and apparatus
RICOH KK174 citations99
US6103441AAug 15, 2000
Color toner for electrophotography
RICOH KK148 citations99
US6716561B2Apr 6, 2004
Toner for developing electrostatic latent image and image forming method using same
RICOH KK75 citations98
US6653037B2Nov 25, 2003
Toner for developing latent electrostatic images, and image forming method and device
RICOH KK91 citations98
US6566026B2May 20, 2003
Toner for developing electrostatic latent image, toner container containing the toner, and image forming method and apparatus using the toner
RICOH KK75 citations98
US6074795AJun 13, 2000
Toner for developing electrostatic latent image
RICOH KK105 citations97
US6946229B2Sep 20, 2005
Toner for forming color image, image forming apparatus, and toner container
RICOH KK54 citations96
US6858365B2Feb 22, 2005
Toner for developing electrostatic latent image, developing method and developing apparatus
RICOH KK57 citations96
US6821698B2Nov 23, 2004
Toner for developing electrostatic latent image, toner cartridge, image forming method, process cartridge and image forming apparatus
RICOH KK60 citations96
US6180298B1Jan 30, 2001
Multi-color toner set and method of forming multi-color images, using the multi-color toner set
RICOH KK65 citations96
US7198874B2Apr 3, 2007
Toner, method of making, method of using
RICOH KK28 citations93
US7132210B2Nov 7, 2006
Image-forming color toner, developing agent, image-forming apparatus, toner container, image-forming process cartridge and image-forming process
RICOH KK27 citations93
US7074535B2Jul 11, 2006
Toner, method of making, method of using
RICOH KK34 citations93
US7074541B2Jul 11, 2006
Toner for electrophotography, method of manufacturing the toner, developer, development method, transfer method, and process cartridge using the toner
RICOH KK39 citations93
US7052815B2May 30, 2006
Color toner for developing electrostatic images, toner container containing the color toner, and image forming method and apparatus using the color toner
RICOH KK30 citations93
US6939653B2Sep 6, 2005
Image-forming color toner, developing agent, image-forming apparatus, toner container, image-forming process cartridge and image-forming process
RICOH KK29 citations93
US7396630B2Jul 8, 2008
Toner, developer including the toner, and method for fixing toner image
RICOH KK14 citations92
US7241548B2Jul 10, 2007
Toner, method for preparing the toner, and image forming method and apparatus using the toner
RICOH KK28 citations92
US6830859B2Dec 14, 2004
Charge control agent and toner using same
RICOH KK27 citations91
US7718340B2May 18, 2010
Image forming apparatus, image forming method, and process cartridge
RICOH KK12 citations84
US7713672B2May 11, 2010
Image forming apparatus, image forming method and process cartridge
RICOH KK15 citations84
US7560216B2Jul 14, 2009
Image-fixing method and image-fixing device, and, image-forming method and image-forming apparatus
RICOH KK10 citations84
US7550245B2Jun 23, 2009
Toner and production method of the same, and image forming method
RICOH KK10 citations84
US7541128B2Jun 2, 2009
Toner, developer including the toner, and method for fixing toner image
RICOH KK9 citations84
US7364828B2Apr 29, 2008
Toner for electrophotography, method of manufacturing the toner, developer, development method, transfer method, and process cartridge using the toner
RICOH KK11 citations84
US7122286B2Oct 17, 2006
Toner for development of electrostatic latent images, method of forming images, image formation apparatus, toner container containing the toner therein, and image formation apparatus equipped with the toner container
RICOH KK13 citations84
US7563555B2Jul 21, 2009
Toner, developer including the toner, and method for fixing toner image
RICOH KK5 citations74
US7384722B2Jun 10, 2008
Method for preparing functional particulate organic material, toner using the functional particulate organic material, and image forming method and apparatus using the toner
RICOH KK8 citations74
US7629099B2Dec 8, 2009
Toner, developer, image forming method, and toner container
RICOH KK3 citations63
US6740461B2May 25, 2004
Carrier and two-component developer for electrophotography
RICOH KK6 citations63
US7666566B2Feb 23, 2010
Electrophotographic toner and method of preparing the toner
RICOH KK1 citations52
RICOH CO LTD
6 patentsUS8034526B2Oct 11, 2011
Method for manufacturing toner and toner
RICOH CO LTD18 citations84
US8026031B2Sep 27, 2011
Toner, vessel with the toner, developer, image forming apparatus and process cartridge and image forming method
RICOH CO LTD6 citations74
US7932007B2Apr 26, 2011
Toner and method for producing the same, and image-forming method using the same
RICOH CO LTD2 citations63
US7873304B2Jan 18, 2011
Image forming apparatus, image forming method, and process cartridge
RICOH CO LTD6 citations63
US7862973B2Jan 4, 2011
Toner and developer, and image forming apparatus, image forming method and process cartridge
RICOH CO LTD4 citations63
US7892718B2Feb 22, 2011
Image forming apparatus, image forming method and process cartridge
RICOH CO LTD0 citations52
NORIKANE YOSHIHIRO
4 patentsUS8568628B2Oct 29, 2013
Toner preparation method and apparatus, and toner prepared thereby
NORIKANE YOSHIHIRO13 citations84
US8105742B2Jan 31, 2012
Method and apparatus for manufacturing toner and toner manufactured by the apparatus and method
NORIKANE YOSHIHIRO10 citations84
US8137087B2Mar 20, 2012
Toner preparation method and apparatus, and toner prepared thereby
NORIKANE YOSHIHIRO6 citations73
US8329373B2Dec 11, 2012
Method and apparatus for producing toner
NORIKANE YOSHIHIRO2 citations61
SUZUKI KAZUMI
2 patentsSHITARA YASUTADA
2 patentsTAKEMOTO OIL & FAT CO LTD
1 patentMAKABE KEIJI
1 patentHONDA TAKAHIRO
1 patentWATANABE YOHICHIROH
1 patentWATANABE NAOHIRO
1 patentShowing the top 50 of 55 patents by PatentIndex Score.