Inventor · disambiguated record
Fumikazu Sato
Also filed as: SATO FUMIKAZU
78 granted patents·2 pending applications·1,414 citations·filing 1989–2020
99Inventor score
Top patents by PatentIndex Score
80 records- 0199US7412188B2Developer cartridge structured to have a predetermined distance between a first axis and a second axisBROTHER IND LTD·Filed 2005·Granted Aug 12, 2008·53 cites·11 claims
- 0298US9110441B2Cartridge detachably mounted on main casingSHIRAKI MASATOSHI·Filed 2013·Granted Aug 18, 2015·31 cites·17 claims
- 0398US7522859B2Developer cartridge with an extension portionBROTHER IND LTD·Filed 2005·Granted Apr 21, 2009·30 cites·30 claims
- 0497US9207567B2Cap configuration for a toner cartridgeBROTHER IND LTD·Filed 2014·Granted Dec 8, 2015·17 cites·16 claims
- 0597US8948661B2Cap configuration for a toner cartridgeBROTHER IND LTD·Filed 2014·Granted Feb 3, 2015·16 cites·20 claims
- 0697US8761643B2Cap configuration for a toner cartridgeMUSHIKA MOTOAKI·Filed 2014·Granted Jun 24, 2014·17 cites·16 claims
- 0797US8666293B2Cap configuration for a toner cartridgeMUSHIKA MOTOAKI·Filed 2011·Granted Mar 4, 2014·18 cites·23 claims
- 0897US7957669B2Photosensitive member cartridge, developer cartridge and process cartridgeBROTHER IND LTD·Filed 2010·Granted Jun 7, 2011·12 cites·21 claims
- 0997US7450876B2Developing cartridge, image holding body cartridge, process cartridge and image forming apparatus that are capable of applying a bias voltage to a developing roller without indication of the developing rollerBROTHER IND LTD·Filed 2005·Granted Nov 11, 2008·29 cites·22 claims
- 1097US6385414B1Contaminant preventing structure for image forming apparatus and process cartridgeBROTHER IND LTD·Filed 2000·Granted May 7, 2002·90 cites·22 claims
- 1197US6336014B1Image developing device with sealing members for preventing toner leakageBROTHER IND LTD·Filed 2000·Granted Jan 1, 2002·93 cites·24 claims
- 1296US8620180B2Process cartridge and developing cartridgeSHIRAKI MASATOSHI·Filed 2009·Granted Dec 31, 2013·22 cites·8 claims
- 1396US7873296B2Photosensitive member cartridge, developer cartridge and process cartridgeBROTHER IND LTD·Filed 2008·Granted Jan 18, 2011·13 cites·16 claims
- 1496US6356723B1Developing device, process cartridge and image forming apparatusBROTHER IND LTD·Filed 2000·Granted Mar 12, 2002·66 cites·15 claims
- 1595US7907875B2Developer cartridge and developing deviceBROTHER IND LTD·Filed 2008·Granted Mar 15, 2011·19 cites·12 claims
- 1695US7844197B2Photosensitive member cartridge, developer cartridge and process cartridgeBROTHER IND LTD·Filed 2009·Granted Nov 30, 2010·11 cites·18 claims
- 1795US7761023B2Developer cartridge, process unit, and image formation deviceBROTHER IND LTD·Filed 2006·Granted Jul 20, 2010·20 cites·13 claims
- 1895US7577382B2Image forming apparatus, process unit, and developing cartridgeBROTHER IND LTD·Filed 2006·Granted Aug 18, 2009·21 cites·11 claims
- 1995US6321050B1Image developing device with sealing members for preventing toner leakageBROTHER IND LTD·Filed 2000·Granted Nov 20, 2001·62 cites·28 claims
- 2094US8744288B2CartridgeSHINOYA SHOTA·Filed 2012·Granted Jun 3, 2014·17 cites·16 claims
- 2194US8170442B2Developing cartridge and image forming apparatusSATO FUMIKAZU·Filed 2009·Granted May 1, 2012·19 cites·33 claims
- 2294US7599640B2Developer cartridge, process unit, and image forming deviceBROTHER IND LTD·Filed 2006·Granted Oct 6, 2009·17 cites·13 claims
- 2394US7336913B2Developing apparatus, process cartridge and image forming apparatus for preventing leakageBROTHER IND LTD·Filed 2005·Granted Feb 26, 2008·20 cites·30 claims
- 2494US6496669B2Developing agent carrier having a sealing mechanism at each end of a developing rollerBROTHER IND LTD·Filed 2002·Granted Dec 17, 2002·46 cites·19 claims
- 2592US8280273B2Process cartridge, image forming apparatus and developing cartridgeKAMIMURA NAOYA·Filed 2012·Granted Oct 2, 2012·4 cites·4 claims
- 2692US8135300B2Process cartridge, image forming apparatus and developing cartridgeKAMIMURA NAOYA·Filed 2008·Granted Mar 13, 2012·8 cites·8 claims
- 2790US8867949B2Developing cartridge for use with an image forming apparatus having a frame to which the cartridge can be mountedKAMIMURA NAOYA·Filed 2013·Granted Oct 21, 2014·3 cites·16 claims
- 2890US8463153B2Process cartridge, image forming apparatus and developing cartridgeKAMIMURA NAOYA·Filed 2012·Granted Jun 11, 2013·3 cites·3 claims
- 2990USD523894SPhotosensitive drum unitBROTHER IND LTD·Filed 2005·Granted Jun 27, 2006·43 cites·1 claims
- 3089US6496668B2Image developing device with sealing members for preventing toner leakageBROTHER IND LTD·Filed 2001·Granted Dec 17, 2002·34 cites·18 claims
- 3188US7486905B2Developer cartridge including developer filling port cap and recycling method thereofBROTHER IND LTD·Filed 2006·Granted Feb 3, 2009·10 cites·62 claims
- 3288USD521545SPhotosensitive drum unitBROTHER IND LTD·Filed 2005·Granted May 23, 2006·38 cites·1 claims
- 3386US7970315B2Developing cartridge having gear supportBROTHER IND LTD·Filed 2010·Granted Jun 28, 2011·3 cites·8 claims
- 3486US7561827B2Developing cartridge having a handle that contacts an exposure unit when installed in an image forming apparatusBROTHER IND LTD·Filed 2007·Granted Jul 14, 2009·8 cites·28 claims
- 3585USD531661SToner cartridgeBROTHER IND LTD·Filed 2005·Granted Nov 7, 2006·32 cites·1 claims
- 3685USD522564SToner cartridgeBROTHER IND LTD·Filed 2005·Granted Jun 6, 2006·32 cites·1 claims
- 3785US6512904B2Recording medium feed path for an image forming apparatusBROTHER IND LTD·Filed 2001·Granted Jan 28, 2003·23 cites·25 claims
- 3884US7356286B2Charger, image forming apparatus and process cartridgeBROTHER IND LTD·Filed 2005·Granted Apr 8, 2008·8 cites·37 claims
- 3984USD533215SToner cartridgeBROTHER IND LTD·Filed 2005·Granted Dec 5, 2006·31 cites·1 claims
- 4084USD523896SPhotosensitive drum unitBROTHER IND LTD·Filed 2005·Granted Jun 27, 2006·31 cites·1 claims
- 4183US7352981B2Developing apparatus, process cartridge and image forming apparatus having toner leakage prevention memberBROTHER IND LTD·Filed 2005·Granted Apr 1, 2008·6 cites·21 claims
- 4283USD523895SPhotosensitive drum unitBROTHER IND LTD·Filed 2005·Granted Jun 27, 2006·29 cites·1 claims
- 4381US7499662B2Developing apparatus, process cartridge and image forming apparatus having toner leakage prevention memberBROTHER IND LTD·Filed 2007·Granted Mar 3, 2009·5 cites·8 claims
- 4480US9612551B2Cap configuration for a toner cartridgeBROTHER IND LTD·Filed 2015·Granted Apr 4, 2017·1 cites·15 claims
- 4580USD531660SToner cartridgeBROTHER IND LTD·Filed 2005·Granted Nov 7, 2006·26 cites·1 claims
- 4680USD528148SToner cartridgeBROTHER IND LTD·Filed 2005·Granted Sep 12, 2006·26 cites·1 claims
- 4779USD694816SToner cartridgeFUKAMACHI YASUO·Filed 2012·Granted Dec 3, 2013·24 cites·1 claims
- 4878US7764406B2Image forming apparatusBROTHER IND LTD·Filed 2005·Granted Jul 27, 2010·5 cites·25 claims
- 4978US6763210B2Method of refilling used developing cartridgeBROTHER IND LTD·Filed 2003·Granted Jul 13, 2004·17 cites·47 claims
- 5077US8634746B2Photosensitive drum cartridge and image forming apparatusKAMIMURA NAOYA·Filed 2011·Granted Jan 21, 2014·2 cites·15 claims
Showing the top 50 of 80 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →