Inventor · disambiguated record
Eisaku Murakami
Also filed as: MURAKAMI EISAKU
51 granted patents·2 pending applications·1,562 citations·filing 1994–2008
99Inventor score
Top patents by PatentIndex Score
53 records- 0197US7272354B2Cleaning unit and image forming apparatus having multiple cleaning bladesRICOH KK·Filed 2006·Granted Sep 18, 2007·27 cites·46 claims
- 0296US5617191AToner conveyor roller and image forming apparatus having the sameRICOH KK·Filed 1995·Granted Apr 1, 1997·84 cites·11 claims
- 0395US7672605B2Transfer device and image forming apparatusRICOH KK·Filed 2007·Granted Mar 2, 2010·22 cites·5 claims
- 0495US7630659B2Method and apparatus for image forming capable of effectively performing a charging processRICOH KK·Filed 2006·Granted Dec 8, 2009·23 cites·15 claims
- 0595US7266324B2Charging device, and process cartridge and image forming apparatus using the charging deviceRICOH KK·Filed 2006·Granted Sep 4, 2007·18 cites·15 claims
- 0695US7184684B2Image forming apparatus, process cartridge, and waste toner recovery deviceRICOH KK·Filed 2005·Granted Feb 27, 2007·16 cites·24 claims
- 0795US6033818ADeveloping device for an image forming apparatusRICOH KK·Filed 1998·Granted Mar 7, 2000·53 cites·9 claims
- 0895US5845183ADeveloping device for an image forming apparatusRICOH KK·Filed 1997·Granted Dec 1, 1998·52 cites·9 claims
- 0995US5708942ADeveloping device for an image forming apparatusRICOH KK·Filed 1996·Granted Jan 13, 1998·53 cites·4 claims
- 1095US5625441ADeveloping device for an image forming apparatusRICOH KK·Filed 1996·Granted Apr 29, 1997·54 cites·9 claims
- 1194US7292817B2Image forming apparatus, process cartridge, and waste toner recovery deviceRICOH KK·Filed 2006·Granted Nov 6, 2007·15 cites·8 claims
- 1294US6975830B2Image forming apparatus, process cartridge, and waste toner recovery deviceRICOH KK·Filed 2003·Granted Dec 13, 2005·37 cites·17 claims
- 1394US5826144ADeveloping device for an electrophotographic recording apparatus including bias control of a toner supplying rollerRICOH KK·Filed 1996·Granted Oct 20, 1998·68 cites·7 claims
- 1494US5489747ADeveloping device for an image forming apparatusRICOH KK·Filed 1995·Granted Feb 6, 1996·73 cites·3 claims
- 1593US7925188B2Development device, process cartridge, and image forming apparatus using the development deviceRICOH CO LTD·Filed 2008·Granted Apr 12, 2011·20 cites·14 claims
- 1693US5697026ADeveloping device having the lengths of two toner transporting rollers and an image bearing member in specific relationshipsRICOH KK·Filed 1995·Granted Dec 9, 1997·62 cites·19 claims
- 1793US5625440ADeveloping device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scatteringRICOH KK·Filed 1995·Granted Apr 29, 1997·64 cites·9 claims
- 1892US7493075B2Cleaning device, process cartridge and image forming apparatusRICOH KK·Filed 2007·Granted Feb 17, 2009·13 cites·15 claims
- 1992US7218877B2Charging device, and process cartridge and image forming apparatus including the charging device using the sameRICOH KK·Filed 2006·Granted May 15, 2007·12 cites·16 claims
- 2092US5768665AImage forming apparatus with bias control to prevent undesirable toner depositionRICOH KK·Filed 1996·Granted Jun 16, 1998·58 cites·14 claims
- 2192US5666625ADevice for electrostatically developing a latent image on an image carrierRICOH KK·Filed 1995·Granted Sep 9, 1997·62 cites·4 claims
- 2291US7062194B2Charging device, and process cartridge and image forming apparatus including the charging deviceRICOH KK·Filed 2004·Granted Jun 13, 2006·31 cites·17 claims
- 2391US5879752AMethod of coating a toner conveyor rollerRICOH KK·Filed 1996·Granted Mar 9, 1999·62 cites·18 claims
- 2491US5689782ADeveloping apparatus for electronic photographic recording equipment, having two developer transfer rollersRICOH KK·Filed 1995·Granted Nov 18, 1997·64 cites·10 claims
- 2591US5625438AToner, and devices for electrostatically depositing a uniform application thereofRICOH KK·Filed 1995·Granted Apr 29, 1997·40 cites·8 claims
- 2691US5486909ADeveloping device for an image forming apparatusRICOH KK·Filed 1995·Granted Jan 23, 1996·56 cites·2 claims
- 2790US5552870ADeveloping device for an image forming apparatusRICOH KK·Filed 1994·Granted Sep 3, 1996·39 cites·17 claims
- 2889US7149465B2Cleaning unit, process cartridge, image forming apparatus, and tonerRICOH KK·Filed 2004·Granted Dec 12, 2006·26 cites·22 claims
- 2989US7110696B2Cleaning unit, process cartridge, and image forming apparatusRICOH KK·Filed 2003·Granted Sep 19, 2006·27 cites·47 claims
- 3089US5897243AElectrophotographic recording apparatus configured to switch a bias voltage in a developing unitRICOH KK·Filed 1996·Granted Apr 27, 1999·49 cites·18 claims
- 3188US7139504B2Charging device, and process cartridge and image forming apparatus using the charging deviceRICOH KK·Filed 2004·Granted Nov 21, 2006·24 cites·15 claims
- 3288US7110699B2Image forming apparatus and process cartridge for use in the sameRICOH KK·Filed 2005·Granted Sep 19, 2006·8 cites·7 claims
- 3388US5734952ADeveloping device for an image forming apparatus and toner cartridge for replenishing a fresh toner to the developing deviceRICOH KK·Filed 1996·Granted Mar 31, 1998·37 cites·40 claims
- 3487US7386257B2Imaging apparatus, and toner and process cartridge used in the imaging apparatusRICOH KK·Filed 2006·Granted Jun 10, 2008·7 cites·3 claims
- 3586US7228099B2Cleaning device for cleaning a surface of an image support bodyRICOH KK·Filed 2004·Granted Jun 5, 2007·21 cites·28 claims
- 3685US7050741B2Imaging apparatus, and toner and process cartridge used in the imaging apparatusRICOH KK·Filed 2004·Granted May 23, 2006·20 cites·16 claims
- 3785US5995789AToner cartridge including toner outlet openings and toner collection openings arranged substantially in a single arrayRICOH KK·Filed 1998·Granted Nov 30, 1999·30 cites·63 claims
- 3884US7657218B2Gloss providing sheet and image formation apparatusRICOH KK·Filed 2007·Granted Feb 2, 2010·7 cites·14 claims
- 3976US6072977AEven bias applying transfer rollerRICOH KK·Filed 1999·Granted Jun 6, 2000·25 cites·4 claims
- 4075US8180270B2Image forming apparatus for controlling glossiness of an imageYASUTOMI KEI·Filed 2008·Granted May 15, 2012·4 cites·12 claims
- 4175US7295796B1Image forming apparatus having a temporary toner holding device and a toner collecting deviceRICOH KK·Filed 2003·Granted Nov 13, 2007·14 cites·37 claims
- 4275US6993281B2Image forming apparatus and process cartridge including flexible memberRICOH KK·Filed 2003·Granted Jan 31, 2006·12 cites·23 claims
- 4373US7085528B2Cleaning unit, process cartridge, and image forming apparatusRICOH KK·Filed 2003·Granted Aug 1, 2006·12 cites·34 claims
- 4472US7430377B2Image forming apparatus and process cartridge having a detachable unit body having a lubricant applying unit and image carrier mounted thereonRICOH KK·Filed 2004·Granted Sep 30, 2008·12 cites·26 claims
- 4570US7065316B2Cleaning unit, process cartridge, image forming apparatus, and tonerRICOH KK·Filed 2003·Granted Jun 20, 2006·10 cites·42 claims
- 4669US5610693ADeveloping device for an image forming apparatusRICOH KK·Filed 1994·Granted Mar 11, 1997·16 cites·35 claims
- 4765US7130564B2Method and apparatus for image forming capable of removing residual toner without using a toner cleaning system, process cartridge for use in the apparatus and toner used for the image formingRICOH KK·Filed 2004·Granted Oct 31, 2006·8 cites·50 claims
- 4859US5625439AElectrophotographic recording apparatus having toner delivering member with large wetting angleRICOH KK·Filed 1995·Granted Apr 29, 1997·13 cites·24 claims
- 4947US2005164108A1Lubricant for electrophotography, lubricant applying unit, process cartridge, and image forming apparatusFiled 2004·Application pending·0 cites
- 5045US7555243B2Charging member, process cartridge including the same, and image forming apparatus including the sameRICOH KK·Filed 2007·Granted Jun 30, 2009·0 cites·20 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →