Inventor
UCHINOKURA OSAMU
JP52 patents
⚠️ This page may combine multiple inventors who share the name “UCHINOKURA OSAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
24 patentsUS7374851B2May 20, 2008
Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming method
RICOH KK67 citations98
US7318989B2Jan 15, 2008
Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method
RICOH KK71 citations98
US6503676B2Jan 7, 2003
Toner, external additive therefor and image forming method using the toner
RICOH KK174 citations98
US6432589B1Aug 13, 2002
Image formation method, electrophotographic toners, and printed matter
RICOH KK99 citations97
US6432590B1Aug 13, 2002
Electrophotographic toner and image forming method using the toner
RICOH KK72 citations94
US7521164B2Apr 21, 2009
Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming method
RICOH KK22 citations93
US7300736B2Nov 27, 2007
Toner, and developer, image forming method, image forming apparatus and process cartridge using the toner
RICOH KK21 citations93
US7258959B2Aug 21, 2007
Toner for electrophotography and image forming apparatus
RICOH KK42 citations93
US6916587B2Jul 12, 2005
Toner, developer, and image forming method and apparatus
RICOH KK31 citations93
US6818370B2Nov 16, 2004
Toner for developing electrostatic latent image, toner cartridge containing the toner and image forming apparatus
RICOH KK43 citations93
US6733939B2May 11, 2004
Toner, developer and container for the developer, and method of and apparatus for forming an image
RICOH KK52 citations93
US7455942B2Nov 25, 2008
Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method using the same
RICOH KK41 citations92
US6737210B2May 18, 2004
Image formation method, electrophotographic toners, and printed matter
RICOH KK25 citations92
US6641969B2Nov 4, 2003
Magnetic toner with negative polarity for developing latent electrostatic images, and image forming apparatus using the same
RICOH KK24 citations92
US6479204B1Nov 12, 2002
Magnetic toner with negative polarity for developing latent electrostatic images, and image forming apparatus using the same
RICOH KK31 citations92
US7566521B2Jul 28, 2009
Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method
RICOH KK11 citations84
US7368213B2May 6, 2008
Toner and fixing device and image forming device using the same
RICOH KK17 citations84
US7442484B2Oct 28, 2008
Image forming method using toner
RICOH KK16 citations83
US7547497B2Jun 16, 2009
Toner, and developer, image developer and image forming apparatus using the toner
RICOH KK2 citations63
US7642032B2Jan 5, 2010
Toner, developer, image forming apparatus and image forming method
RICOH KK5 citations62
US7741002B2Jun 22, 2010
Toner, toner production method, and image forming method
RICOH KK3 citations58
US7824831B2Nov 2, 2010
Toner
RICOH KK1 citations52
US7817955B2Oct 19, 2010
Image forming apparatus for securing good cleaning performance without cleaning blade abrasion
RICOH KK0 citations42
US7638250B2Dec 29, 2009
Toner, developing device, image forming apparatus, and image forming method using the toner
RICOH KK0 citations42
RICOH CO LTD
5 patentsUS8007976B2Aug 30, 2011
Electrostatic image developing toner, toner kit and image forming apparatus
RICOH CO LTD10 citations84
US8026031B2Sep 27, 2011
Toner, vessel with the toner, developer, image forming apparatus and process cartridge and image forming method
RICOH CO LTD6 citations74
US7943280B2May 17, 2011
Toner containing a laminar inorganic mineral in which part or all of the ions present between layers are modified by organic ions
RICOH CO LTD2 citations63
US8043778B2Oct 25, 2011
Toner, method for preparing the toner, and image forming apparatus using the toner
RICOH CO LTD1 citations52
US8029960B2Oct 4, 2011
Toner for developing electrostatic latent image, and image forming apparatus and process cartridge using the toner
RICOH CO LTD1 citations52
FUJITSU LTD
3 patentsUCHINOKURA OSAMU
3 patentsAWAMURA JUNICHI
3 patentsWATANABE MASAKI
2 patentsSUGIMOTO TSUYOSHI
2 patentsWATANABE NAOHIRO
2 patentsKUSAHARA TERUKI
1 patentSATOH SYOUKO
1 patentKOJIMA SATOSHI
1 patentINOUE DAISUKE
1 patentOGAWA SATOSHI
1 patentYOSHIDA RYUUTA
1 patentShowing the top 50 of 52 patents by PatentIndex Score.