Inventor · disambiguated record
Nobuyuki Okubo
Also filed as: OKUBO NOBUYUKI
27 granted patents·4 pending applications·535 citations·filing 1989–2007
97Inventor score
Top patents by PatentIndex Score
31 records- 0195US7745089B2Process for producing toner, and tonerCANON KK·Filed 2007·Granted Jun 29, 2010·18 cites·5 claims
- 0293US7273686B2TonerCANON KK·Filed 2004·Granted Sep 25, 2007·49 cites·5 claims
- 0392US7288354B2TonerCANON KK·Filed 2004·Granted Oct 30, 2007·42 cites·12 claims
- 0491US5489498AToner for developing electrostatic image and method of manufacturing resin compositionCANON KK·Filed 1994·Granted Feb 6, 1996·36 cites·5 claims
- 0590US7351509B2TonerCANON KK·Filed 2004·Granted Apr 1, 2008·34 cites·7 claims
- 0690US5744276AToner for developing electrostatic image containing higher and lower molecular weight polymer componentsCANON KK·Filed 1994·Granted Apr 28, 1998·34 cites·19 claims
- 0787US7184589B2Image compression apparatusPFU LTD·Filed 2003·Granted Feb 27, 2007·31 cites·4 claims
- 0884US6458499B1Toner having hydrocarbon wax with specific ester value and hydroxyl valueCANON KK·Filed 2001·Granted Oct 1, 2002·23 cites·33 claims
- 0983US5750302AMagnetic toner for developing electrostatic image, image forming process, and process cartridgeCANON KK·Filed 1997·Granted May 12, 1998·32 cites·86 claims
- 1083US5364720AMagnetic developer for developing electrostatic imagesCANON KK·Filed 1993·Granted Nov 15, 1994·28 cites·25 claims
- 1180US6589701B2Dry toner, image forming method and process cartridgeCANON KK·Filed 2001·Granted Jul 8, 2003·20 cites·52 claims
- 1278US6673506B2Toner production processCANON KK·Filed 2001·Granted Jan 6, 2004·17 cites·24 claims
- 1378US6426169B1Toner containing azo iron compoundCANON KK·Filed 2000·Granted Jul 30, 2002·17 cites·20 claims
- 1478US6007957AMagnetic toner, image forming method and process cartridgeCANON KK·Filed 1998·Granted Dec 28, 1999·27 cites·101 claims
- 1574US7306889B2Process for producing toner, and tonerCANON KK·Filed 2004·Granted Dec 11, 2007·11 cites·5 claims
- 1672US6630275B2Magnetic toner and process cartridgeCANON KK·Filed 2002·Granted Oct 7, 2003·12 cites·10 claims
- 1771US5942366AImage forming method employing toner containing higher and lower molecular weight polymer componentsCANON KK·Filed 1998·Granted Aug 24, 1999·18 cites·52 claims
- 1868US5858593AMagnetic toner, apparatus unit and image forming methodCANON KK·Filed 1997·Granted Jan 12, 1999·19 cites·66 claims
- 1966US5962176AToner for developing electrostatic image, image forming method and process-cartridgeCANON KK·Filed 1997·Granted Oct 5, 1999·18 cites·23 claims
- 2058US6090515AToner for developing electrostatic image, image forming method and process cartridgeCANON KK·Filed 1997·Granted Jul 18, 2000·11 cites·38 claims
- 2156US6810217B2Process cartridgeCANON KK·Filed 2002·Granted Oct 26, 2004·6 cites·6 claims
- 2255US5840459AToner for developing electrostatic images and process for production thereofCANON KK·Filed 1996·Granted Nov 24, 1998·12 cites·39 claims
- 2353US5854365AToner for developing electrostatic image and method of manufacturing resin compositionCANON KK·Filed 1995·Granted Dec 29, 1998·9 cites·3 claims
- 2446US7327881B2Image reading apparatusPFU LTD·Filed 2004·Granted Feb 5, 2008·3 cites·7 claims
- 2546US6365314B1Toner for developing electrostatic image, image forming method and process cartridgeCANON KK·Filed 1999·Granted Apr 2, 2002·6 cites·35 claims
- 2645US2005200903A1Image processing deviceFiled 2003·Application pending·0 cites
- 2742US4960945AProcess for the production of halobenzophenone derivativesKUREHA CHEMICAL IND CO LTD·Filed 1989·Granted Oct 2, 1990·2 cites·2 claims
- 2840US2004179733A1Image reading apparatusPFU LTD·Filed 2004·Application pending·0 cites
- 2939US2003235334A1Method for recognizing imagePFU LTD·Filed 2003·Application pending·0 cites
- 3034US2003198883A1TonerFiled 2003·Application pending·0 cites
- 3130US5087742AProcess for preparing aromatic polycarboxylic acidsKUREHA CHEMICAL IND CO LTD·Filed 1990·Granted Feb 11, 1992·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →