Inventor · disambiguated record
Katsuhiro Echigo
Also filed as: ECHIGO KATSUHIRO
46 granted patents·3 pending applications·1,527 citations·filing 1989–2012
99Inventor score
Top patents by PatentIndex Score
49 records- 0198US7299003B2Fixing unit and image forming apparatus providing a quick start-up and reduction in energy consumptionRICOH KK·Filed 2005·Granted Nov 20, 2007·50 cites·19 claims
- 0298US7233762B2Method of uniformly fixing toner to recording medium in image forming apparatusRICOH KK·Filed 2005·Granted Jun 19, 2007·52 cites·26 claims
- 0397US7433641B2Fixing member, fixing device, and image forming apparatusRICOH KK·Filed 2005·Granted Oct 7, 2008·21 cites·15 claims
- 0497US7369803B2Fixing device and image forming apparatus using the sameRICOH KK·Filed 2005·Granted May 6, 2008·27 cites·6 claims
- 0597US7333760B2Fixing device with temperature controlRICOH KK·Filed 2005·Granted Feb 19, 2008·31 cites·18 claims
- 0697US7269384B2Transfer-fixing unit with a surface layer of predefined hardness for use in an image forming apparatusRICOH KK·Filed 2005·Granted Sep 11, 2007·39 cites·22 claims
- 0797US6347212B1Image forming apparatus having improved image carrier cleaningRICOH KK·Filed 2000·Granted Feb 12, 2002·91 cites·131 claims
- 0896US7570911B2Image forming method and apparatus for fixing an imageRICOH KK·Filed 2006·Granted Aug 4, 2009·19 cites·18 claims
- 0996US6795678B2Image forming apparatus for fixing a toner image on a sheet or recording medium by use of a belt memberRICOH KK·Filed 2002·Granted Sep 21, 2004·71 cites·19 claims
- 1095US7127202B2Intermediary transfer apparatus, fixing apparatus and image forming apparatusRICOH KK·Filed 2004·Granted Oct 24, 2006·56 cites·21 claims
- 1195US7058330B2Image forming apparatusRICOH KK·Filed 2005·Granted Jun 6, 2006·18 cites·13 claims
- 1295US6847792B2Image forming apparatus having a selectively discharged storageRICOH KK·Filed 2002·Granted Jan 25, 2005·46 cites·12 claims
- 1395US5493365AOperating section for an image forming apparatusRICOH KK·Filed 1994·Granted Feb 20, 1996·64 cites·20 claims
- 1495US4985733AImage fixing unit for use in wet-type electrophotographic copying machineRICOH KK·Filed 1989·Granted Jan 15, 1991·63 cites·9 claims
- 1594US7010255B2Fixing device having a heating member and image forming apparatus including the sameRICOH KK·Filed 2003·Granted Mar 7, 2006·50 cites·12 claims
- 1694US5155534AApparatus for forming and developing latent electrostatic images with liquid developer and release agentRICOH KK·Filed 1990·Granted Oct 13, 1992·59 cites·4 claims
- 1793US7177580B2Image forming method and apparatus for fixing an imageRICOH KK·Filed 2004·Granted Feb 13, 2007·36 cites·60 claims
- 1893US5359398AElectrophotographic copier with a developing device using a liquid developerRICOH KK·Filed 1992·Granted Oct 25, 1994·52 cites·7 claims
- 1992US7254362B2Fixing device, image forming apparatus using the fixing device, and heat insulating memberRICOH KK·Filed 2004·Granted Aug 7, 2007·38 cites·33 claims
- 2091US7738827B2Image forming apparatus with toner image fixing unit, and the fixing method thereofRICOH KK·Filed 2005·Granted Jun 15, 2010·10 cites·10 claims
- 2191US7139520B2Fixing device, nipping device, and image forming apparatusRICOH KK·Filed 2004·Granted Nov 21, 2006·34 cites·32 claims
- 2291US6721532B2Fixing device capable of changing smoothness of surface of toner of fixed toner image on sheet and image forming apparatus using said fixing deviceRICOH KK·Filed 2002·Granted Apr 13, 2004·36 cites·55 claims
- 2391US5642188AWet-type electrophotographic image formation methodRICOH KK·Filed 1994·Granted Jun 24, 1997·45 cites·30 claims
- 2490US5708949AImage fixing device for image forming apparatusRICOH KK·Filed 1996·Granted Jan 13, 1998·61 cites·21 claims
- 2590US5155531AApparatus for decomposing ozone by using a solvent mistRICOH KK·Filed 1990·Granted Oct 13, 1992·44 cites·17 claims
- 2689US7010257B2Method of fixing toner on recording mediumRICOH KK·Filed 2004·Granted Mar 7, 2006·26 cites·14 claims
- 2789US6957036B2Fixing member, fixing device, and image forming apparatusRICOH KK·Filed 2004·Granted Oct 18, 2005·32 cites·14 claims
- 2888US7346305B2Sheet wrapping avoidable fixing apparatus and image forming apparatusRICOH KK·Filed 2006·Granted Mar 18, 2008·6 cites·11 claims
- 2988US7251429B2Image forming apparatus with an energy storage that can be discharged, and with a display of residual energy in the storageRICOH KK·Filed 2006·Granted Jul 31, 2007·7 cites·19 claims
- 3088US5021834AWet-type image formation apparatusRICOH KK·Filed 1990·Granted Jun 4, 1991·44 cites·8 claims
- 3187US5384225ALiquid developer for latent electrostatic imagesRICOH KK·Filed 1992·Granted Jan 24, 1995·34 cites·8 claims
- 3285US5463447ADevice for removing a toner from a toner image carrierRICOH KK·Filed 1993·Granted Oct 31, 1995·34 cites·21 claims
- 3385US5463453AWet-type image formation apparatusRICOH KK·Filed 1993·Granted Oct 31, 1995·33 cites·22 claims
- 3484US5592275AImage fixing device with oil application roller for image forming apparatusRICOH KK·Filed 1995·Granted Jan 7, 1997·36 cites·31 claims
- 3582US4987457AFixing method for a wet process copierRICOH KK·Filed 1990·Granted Jan 22, 1991·29 cites·5 claims
- 3680US7546074B2Image forming apparatusRICOH KK·Filed 2007·Granted Jun 9, 2009·6 cites·9 claims
- 3779US5678158AApparatus for repetitively using a toner image carrierRICOH KK·Filed 1994·Granted Oct 14, 1997·23 cites·3 claims
- 3875US5610725ACommunication system for managing data of resources of image forming unitRICOH KK·Filed 1995·Granted Mar 11, 1997·44 cites·13 claims
- 3972US6150066AMethod and apparatus for repetitively using a toner image carrier sheetRICOH KK·Filed 1997·Granted Nov 21, 2000·20 cites·5 claims
- 4069US8358955B2Transfer device and image forming apparatusRICOH CO LTD·Filed 2009·Granted Jan 22, 2013·3 cites·2 claims
- 4167US7224928B2Sheet wrapping avoidable fixing apparatus and image forming apparatusRICOH KK·Filed 2004·Granted May 29, 2007·6 cites·10 claims
- 4267US5504590ACommunication system for managing data of resources of image forming unitRICOH KK·Filed 1995·Granted Apr 2, 1996·30 cites·9 claims
- 4355US8081913B2Image forming apparatusOYAMA HAJIME·Filed 2008·Granted Dec 20, 2011·1 cites·17 claims
- 4454US8515323B2Sheet wrapping avoidable fixing apparatus and image forming apparatusKIKUCHI HISASHI·Filed 2009·Granted Aug 20, 2013·0 cites·25 claims
- 4542US8121527B2Image forming apparatus having a neutralizing member of determined resistivityOYAMA HAJIME·Filed 2008·Granted Feb 21, 2012·0 cites·19 claims
- 4639US2006209151A1Image forming apparatusTAMIYA TAKAHIRO·Filed 2006·Application pending·0 cites
- 4738US8731448B2Image forming apparatus including a secondary transfer nip formed with a movable rollerECHIGO KATSUHIRO·Filed 2012·Granted May 20, 2014·0 cites·10 claims
- 4837US2006013624A1Image-fixing apparatus, and, image-forming apparatusKUROTAKA SHIGEO·Filed 2005·Application pending·0 cites
- 4936US2005158075A1Heating apparatus, image fixing apparatus, and image forming apparatusFiled 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →