Inventor · disambiguated record
Koh Ishigami
Also filed as: ISHIGAMI KOH
47 granted patents·22 pending applications·1,532 citations·filing 2004–2024
99Inventor score
Top patents by PatentIndex Score
69 records- 0199US9063443B2Magnetic carrier and two-component developerCANON KK·Filed 2013·Granted Jun 23, 2015·50 cites·10 claims
- 0298US10775710B1TonerCANON KK·Filed 2019·Granted Sep 15, 2020·33 cites·5 claims
- 0398US10423090B2Magenta toner and toner kitCANON KK·Filed 2018·Granted Sep 24, 2019·30 cites·10 claims
- 0498US10234777B2Toner and method for manufacturing tonerCANON KK·Filed 2017·Granted Mar 19, 2019·34 cites·20 claims
- 0598US10216108B2Toner production method and polymerCANON KK·Filed 2017·Granted Feb 26, 2019·33 cites·7 claims
- 0698US10133201B2TonerCANON KK·Filed 2017·Granted Nov 20, 2018·34 cites·11 claims
- 0798US10012921B2TonerCANON KK·Filed 2017·Granted Jul 3, 2018·37 cites·3 claims
- 0898US10012918B2Toner and method for producing tonerCANON KK·Filed 2017·Granted Jul 3, 2018·37 cites·4 claims
- 0998US9969834B2Wax dispersant for toner and tonerCANON KK·Filed 2016·Granted May 15, 2018·42 cites·15 claims
- 1098US9915885B2TonerCANON KK·Filed 2016·Granted Mar 13, 2018·35 cites·4 claims
- 1198US9665023B2Toner and two-component developerCANON KK·Filed 2014·Granted May 30, 2017·53 cites·6 claims
- 1298US9058924B2Magnetic carrier and two-component developerCANON KK·Filed 2013·Granted Jun 16, 2015·50 cites·3 claims
- 1398US8986914B2TonerFUJIKAWA HIROYUKI·Filed 2011·Granted Mar 24, 2015·75 cites·5 claims
- 1498US8974994B2Magnetic carrier, two-component developer, and developer for replenishmentCANON KK·Filed 2013·Granted Mar 10, 2015·33 cites·5 claims
- 1598US8927188B2Method of producing magnetic carrier and magnetic carrier that uses this production methodCANON KK·Filed 2013·Granted Jan 6, 2015·60 cites·2 claims
- 1698US8921023B2Magnetic carrier and two-component developerCANON KK·Filed 2013·Granted Dec 30, 2014·51 cites·10 claims
- 1798US7939233B2Magnetic carrier and two-component developerCANON KK·Filed 2010·Granted May 10, 2011·58 cites·6 claims
- 1898US7927775B2Magnetic carrier and two component developerCANON KK·Filed 2010·Granted Apr 19, 2011·58 cites·5 claims
- 1998US7906262B2Two-component developer, replenishing developer, and image-forming methodCANON KK·Filed 2010·Granted Mar 15, 2011·32 cites·10 claims
- 2098US7858283B2Magnetic carrier and two-component developerCANON KK·Filed 2010·Granted Dec 28, 2010·57 cites·11 claims
- 2198US7767370B2Two-component developer, replenishing developer, and image-forming methodCANON KK·Filed 2008·Granted Aug 3, 2010·47 cites·11 claims
- 2298US7629100B2TonerCANON KK·Filed 2007·Granted Dec 8, 2009·36 cites·5 claims
- 2398US7396626B2TonerCANON KK·Filed 2005·Granted Jul 8, 2008·55 cites·6 claims
- 2498US7396629B2Image forming method and image forming apparatusCANON KK·Filed 2005·Granted Jul 8, 2008·53 cites·12 claims
- 2597US8137886B2Magnetic carrier, two-component developer and image forming methodBABA YOSHINOBU·Filed 2010·Granted Mar 20, 2012·61 cites·11 claims
- 2697US7611813B2Toner and image forming methodCANON KK·Filed 2007·Granted Nov 3, 2009·58 cites·4 claims
- 2796US11429032B2Toner and method of producing tonerCANON KK·Filed 2020·Granted Aug 30, 2022·6 cites·9 claims
- 2896US10642178B2TonerCANON KK·Filed 2019·Granted May 5, 2020·17 cites·4 claims
- 2996US8323726B2Production method of magnetic carrier and magnetic carrier produced therewithNAKA TAKESHI·Filed 2010·Granted Dec 4, 2012·52 cites·3 claims
- 3096US8114562B2Two-component developer, replenishing developer, and image-forming methodISHIGAMI KOH·Filed 2010·Granted Feb 14, 2012·36 cites·10 claims
- 3195US7288348B2Color tonerCANON KK·Filed 2004·Granted Oct 30, 2007·60 cites·13 claims
- 3295US7279262B2Magnetic carrier and two-component developerCANON KK·Filed 2004·Granted Oct 9, 2007·60 cites·21 claims
- 3394US11720036B2TonerCANON KK·Filed 2021·Granted Aug 8, 2023·3 cites·5 claims
- 3494US8945805B2Magnetic carrier and two-components developerBABA YOSHINOBU·Filed 2009·Granted Feb 3, 2015·23 cites·8 claims
- 3594US8298742B2Method for producing electrophotographic carrier and electrophotographic carrier produced by using the methodOKAMOTO NAOKI·Filed 2008·Granted Oct 30, 2012·24 cites·3 claims
- 3690US11698594B2TonerCANON KK·Filed 2021·Granted Jul 11, 2023·2 cites·6 claims
- 3790US9034551B2Two-component developerENDO TOMOKO·Filed 2009·Granted May 19, 2015·19 cites·9 claims
- 3890US7272348B2Developing method using a developer with a specified degree of compression and shearing stressCANON KK·Filed 2005·Granted Sep 18, 2007·12 cites·7 claims
- 3988US8455167B2Toner, binary developer, and image forming methodSHIOTARI YOSHIAKI·Filed 2010·Granted Jun 4, 2013·5 cites·7 claims
- 4083US7983581B2Fixing method and fixing device with specified temperature relationships for recording mediumCANON KK·Filed 2005·Granted Jul 19, 2011·7 cites·4 claims
- 4177US12429791B2TonerCANON KK·Filed 2024·Granted Sep 30, 2025·0 cites·3 claims
- 4264US2022050398A1TonerCANON KK·Filed 2021·Application pending·0 cites
- 4364US2015003875A1Two-component developer, replenishing developer, and image-forming methodCANON KK·Filed 2014·Application pending·0 cites
- 4463US12099326B2TonerCANON KK·Filed 2021·Granted Sep 24, 2024·0 cites·9 claims
- 4563US10809640B2TonerCANON KK·Filed 2019·Granted Oct 20, 2020·0 cites·4 claims
- 4662US2025021028A1Toner producing methodCANON KK·Filed 2024·Application pending·0 cites
- 4761US9811019B2Magnetic carrier and two-component developerKAMAE KENTARO·Filed 2012·Granted Nov 7, 2017·1 cites·2 claims
- 4861US7912389B2Image forming apparatusCANON KK·Filed 2008·Granted Mar 22, 2011·2 cites·8 claims
- 4958US2013236830A1Toner, binary developer, and image forming methodCANON KK·Filed 2013·Application pending·0 cites
- 5056US7381515B2Image forming method and image forming apparatusCANON KK·Filed 2005·Granted Jun 3, 2008·1 cites·4 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →