Inventor · disambiguated record
Yuzo Tokunaga
Also filed as: TOKUNAGA YUZO
20 granted patents·11 pending applications·341 citations·filing 1994–2022
95Inventor score
Top patents by PatentIndex Score
31 records- 0198US11181848B2Liquid developer and method of producing liquid developerCANON KK·Filed 2020·Granted Nov 23, 2021·15 cites·5 claims
- 0293US5766814AMagnetic coated carrier, two-component type developer and developing methodCANON KK·Filed 1997·Granted Jun 16, 1998·65 cites·72 claims
- 0391US6165663AMagnetic coated carrier two-component type developer and developing methodCANON KK·Filed 1999·Granted Dec 26, 2000·53 cites·89 claims
- 0489US9946175B2Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and condensed polycyclic aromatic compoundCANON KK·Filed 2015·Granted Apr 17, 2018·4 cites·8 claims
- 0588US5573880ACarrier for electrophotography, process for its production, two-component type developer, and image forming methodCANON KK·Filed 1994·Granted Nov 12, 1996·36 cites·65 claims
- 0687US6566028B2Toner, and process for producing tonerCANON KK·Filed 2001·Granted May 20, 2003·23 cites·52 claims
- 0781US6358658B1Toner, and process for producing tonerCANON KK·Filed 1999·Granted Mar 19, 2002·25 cites·22 claims
- 0877US10162281B2Liquid developer and manufacturing method of liquid developerCANON KK·Filed 2017·Granted Dec 25, 2018·1 cites·3 claims
- 0977US6106990AProcess for producing toner particlesCANON KK·Filed 1999·Granted Aug 22, 2000·26 cites·16 claims
- 1077US6010811ATwo-component type developer, developing method and image forming methodCANON KK·Filed 1997·Granted Jan 4, 2000·23 cites·43 claims
- 1176US5712069ATwo-component type developer, developing method and image forming methodCANON KK·Filed 1995·Granted Jan 27, 1998·25 cites·60 claims
- 1275US6083655AMagnetic brush developing methodCANON KK·Filed 1999·Granted Jul 4, 2000·24 cites·19 claims
- 1373US6159648ATwo-component type developer, developing method and image forming methodCANON KK·Filed 1999·Granted Dec 12, 2000·19 cites·3 claims
- 1466US12386282B2Magnetic carrier, two-component developer, and developer for replenishmentCANON KK·Filed 2022·Granted Aug 12, 2025·0 cites·10 claims
- 1556US11624987B2Liquid developerCANON KK·Filed 2020·Granted Apr 11, 2023·0 cites·5 claims
- 1655US11281120B2Liquid developer and image-forming methodCANON KK·Filed 2020·Granted Mar 22, 2022·0 cites·5 claims
- 1753US11188005B2Liquid developerCANON KK·Filed 2020·Granted Nov 30, 2021·0 cites·9 claims
- 1848US8398774B2Method of manufacturing organic light emitting device and vapor deposition systemOTSUKA MANABU·Filed 2006·Granted Mar 19, 2013·0 cites·2 claims
- 1948US2008268136A1Method of producing organic light emitting apparatusCANON KK·Filed 2008·Application pending·0 cites
- 2047US2012083062A1Method of manufacturing organic light emitting deviceOTSUKA MANABU·Filed 2011·Application pending·0 cites
- 2146US12429793B2Magnetic carrier and two-component developerCANON KK·Filed 2022·Granted Sep 30, 2025·0 cites·7 claims
- 2243US2019107794A1Liquid developer and method for producing liquid developerCANON KK·Filed 2018·Application pending·0 cites
- 2342US2018046102A1Liquid developerCANON KK·Filed 2017·Application pending·0 cites
- 2441US2018348658A1Curable liquid developer and method for producing curable liquid developerCANON KK·Filed 2018·Application pending·0 cites
- 2541US2018329333A1Curable liquid developer and method for manufacturing curable liquid developerCANON KK·Filed 2018·Application pending·0 cites
- 2641US2021063906A1Liquid developerCANON KK·Filed 2020·Application pending·0 cites
- 2740US2018321607A1Curable liquid developerCANON KK·Filed 2018·Application pending·0 cites
- 2840US2021080848A1Liquid developerCANON KK·Filed 2020·Application pending·0 cites
- 2940US2021033995A1Liquid developer and image-forming apparatusCANON KK·Filed 2020·Application pending·0 cites
- 3040US2020409284A1Liquid developerCANON KK·Filed 2020·Application pending·0 cites
- 3133US6038419AContact charging device having a magnetic brush comprised of magnetic particles for electrostatically charging a photosensitive drumCANON KK·Filed 1998·Granted Mar 14, 2000·2 cites·28 claims
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