Inventor · disambiguated record
Masatake Tanaka
Also filed as: TANAKA MASATAKE
43 granted patents·10 pending applications·1,049 citations·filing 2008–2025
98Inventor score
Top patents by PatentIndex Score
53 records- 0198US11249408B2TonerCANON KK·Filed 2020·Granted Feb 15, 2022·12 cites·11 claims
- 0298US9835964B2TonerCANON KK·Filed 2014·Granted Dec 5, 2017·52 cites·12 claims
- 0398US9785071B2Toner and method for producing tonerCANON KK·Filed 2016·Granted Oct 10, 2017·52 cites·6 claims
- 0498US9575424B2Method of producing a toner particleCANON KK·Filed 2015·Granted Feb 21, 2017·60 cites·6 claims
- 0598US8815484B2Toner including compound having bisazo skeletonCANON KK·Filed 2012·Granted Aug 26, 2014·52 cites·10 claims
- 0698US8377616B2AZO compound, and pigment dispersant, pigment composition, pigment dispersion and toner including the azo compoundCANON KK·Filed 2011·Granted Feb 19, 2013·57 cites·11 claims
- 0798US7833685B2Coloring compound and yellow toner containing the coloring compoundCANON KK·Filed 2008·Granted Nov 16, 2010·60 cites·6 claims
- 0897US11169460B2TonerCANON KK·Filed 2019·Granted Nov 9, 2021·19 cites·4 claims
- 0997US11003105B2Toner and toner manufacturing methodCANON KK·Filed 2019·Granted May 11, 2021·21 cites·8 claims
- 1097US11003104B2TonerCANON KK·Filed 2019·Granted May 11, 2021·21 cites·6 claims
- 1197US10976679B2TonerCANON KK·Filed 2019·Granted Apr 13, 2021·21 cites·8 claims
- 1297US10942466B2Toner with an external additive of an organosilicon polymer particle having a hydroxyl groupCANON KK·Filed 2019·Granted Mar 9, 2021·21 cites·9 claims
- 1397US9958801B2Toner and production method thereofCANON KK·Filed 2016·Granted May 1, 2018·33 cites·10 claims
- 1497US9904193B2Toner and method of producing tonerCANON KK·Filed 2016·Granted Feb 27, 2018·29 cites·9 claims
- 1597US9829816B2TonerCANON KK·Filed 2015·Granted Nov 28, 2017·55 cites·7 claims
- 1697US9599919B2TonerCANON KK·Filed 2014·Granted Mar 21, 2017·61 cites·14 claims
- 1797US9500972B2TonerCANON KK·Filed 2014·Granted Nov 22, 2016·48 cites·10 claims
- 1897US9383668B2TonerCANON KK·Filed 2014·Granted Jul 5, 2016·65 cites·10 claims
- 1997US9377705B2TonerCANON KK·Filed 2014·Granted Jun 28, 2016·71 cites·12 claims
- 2097US9158216B2Method for producing toner particlesCANON KK·Filed 2014·Granted Oct 13, 2015·72 cites·5 claims
- 2196US10845721B2TonerCANON KK·Filed 2019·Granted Nov 24, 2020·16 cites·8 claims
- 2296US9658549B2TonerCANON KK·Filed 2016·Granted May 23, 2017·36 cites·8 claims
- 2395US10054866B2TonerCANON KK·Filed 2017·Granted Aug 21, 2018·30 cites·8 claims
- 2495US8628899B2azo compound, and pigment dispersant, pigment composition, pigment dispersion and toner including the AZO compoundKAWAMURA MASASHI·Filed 2011·Granted Jan 14, 2014·52 cites·14 claims
- 2591US11947280B2Image forming apparatusCANON KK·Filed 2022·Granted Apr 2, 2024·1 cites·14 claims
- 2691US8815485B2Azo compound, pigment dispersant containing the azo compound, pigment composition, pigment dispersion, and tonerTANAKA MASATAKE·Filed 2011·Granted Aug 26, 2014·8 cites·11 claims
- 2789US11829105B2Image forming method and image forming apparatusCANON KK·Filed 2021·Granted Nov 28, 2023·2 cites·7 claims
- 2887US8211221B2Colorant compound and ink including the colorant compoundTANAKA MASATAKE·Filed 2009·Granted Jul 3, 2012·9 cites·5 claims
- 2986US11493859B2Image forming apparatusCANON KK·Filed 2021·Granted Nov 8, 2022·1 cites·15 claims
- 3084US8916318B2Black toner containing compound having azo skeletonCANON KK·Filed 2013·Granted Dec 23, 2014·3 cites·8 claims
- 3183US9766566B2Toner and method for producing the sameCANON KK·Filed 2016·Granted Sep 19, 2017·2 cites·9 claims
- 3282US12443129B2Image forming apparatus with simplified developer replenishment structure and that is user-friendlyCANON KK·Filed 2024·Granted Oct 14, 2025·0 cites·13 claims
- 3382US12124212B2TonerCANON KK·Filed 2021·Granted Oct 22, 2024·1 cites·6 claims
- 3481US9097999B2Polyester, pigment composition, and tonerMURAI YASUAKI·Filed 2011·Granted Aug 4, 2015·3 cites·9 claims
- 3581US8962726B2Compound having bisazo skeleton, pigment dispersant containing the compound, pigment composition, pigment dispersion, ink and resist composition for color filterCANON KK·Filed 2012·Granted Feb 24, 2015·3 cites·12 claims
- 3675US12510844B2Toner accommodating containerCANON KK·Filed 2024·Granted Dec 30, 2025·0 cites·13 claims
- 3771US2025172901A1CartridgeCANON KK·Filed 2025·Application pending·0 cites
- 3867US2025001748A1Adhesion method, toner set and adhesion apparatusCANON KK·Filed 2024·Application pending·0 cites
- 3960US2015064618A1Black toner containing compound having azo skeletonCANON KK·Filed 2014·Application pending·0 cites
- 4054US2024337967A1Toner containerCANON KK·Filed 2024·Application pending·0 cites
- 4153US12235606B2Process cartridgeCANON KK·Filed 2021·Granted Feb 25, 2025·0 cites·7 claims
- 4253US9249308B2Compound having bisazo dye skeleton, pigment composition containing the same, pigment dispersion, ink, and color filter resist compositionCANON KK·Filed 2012·Granted Feb 2, 2016·0 cites·11 claims
- 4351US9176407B2Toner and method for manufacturing toner particlesCANON KK·Filed 2012·Granted Nov 3, 2015·0 cites·9 claims
- 4451US2010035171A1Yellow tonerCANON KK·Filed 2009·Application pending·0 cites
- 4548US12282269B2Cartridge and image forming apparatusCANON KK·Filed 2023·Granted Apr 22, 2025·0 cites·17 claims
- 4647US12411428B2Toner packCANON KK·Filed 2023·Granted Sep 9, 2025·0 cites·9 claims
- 4747US12306572B2Process cartridgeCANON KK·Filed 2021·Granted May 20, 2025·0 cites·6 claims
- 4847US2023273542A1Toner set, image forming method, and image forming apparatusCANON KK·Filed 2023·Application pending·0 cites
- 4947US2023273541A1Toner and method for producing tonerCANON KK·Filed 2023·Application pending·0 cites
- 5047US2023042289A1Toner and method for producing the tonerCANON KK·Filed 2022·Application pending·0 cites
Showing the top 50 of 53 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Masatake Tanaka files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →