Inventor · disambiguated record
Ryuji Murayama
Also filed as: MURAYAMA RYUJI
32 granted patents·11 pending applications·907 citations·filing 1990–2023
97Inventor score
Top patents by PatentIndex Score
43 records- 0198US10775710B1TonerCANON KK·Filed 2019·Granted Sep 15, 2020·33 cites·5 claims
- 0298US10514624B2TonerCANON KK·Filed 2018·Granted Dec 24, 2019·33 cites·12 claims
- 0398US10451990B2Toner and method for producing tonerCANON KK·Filed 2018·Granted Oct 22, 2019·35 cites·8 claims
- 0498US10353312B2TonerCANON KK·Filed 2018·Granted Jul 16, 2019·37 cites·8 claims
- 0598US10228629B2TonerCANON KK·Filed 2018·Granted Mar 12, 2019·43 cites·9 claims
- 0698US10203619B2Toner and method for producing tonerCANON KK·Filed 2017·Granted Feb 12, 2019·43 cites·11 claims
- 0798US10088765B2Toner and method for producing tonerCANON KK·Filed 2017·Granted Oct 2, 2018·45 cites·15 claims
- 0898US10078281B2Toner and method for producing tonerCANON KK·Filed 2017·Granted Sep 18, 2018·46 cites·17 claims
- 0998US10012920B2Toner and method of producing tonerCANON KK·Filed 2015·Granted Jul 3, 2018·46 cites·4 claims
- 1098US9897934B2TonerCANON KK·Filed 2015·Granted Feb 20, 2018·47 cites·20 claims
- 1197US10877386B2TonerCANON KK·Filed 2019·Granted Dec 29, 2020·25 cites·17 claims
- 1295US5227252AElectroluminescent devicePIONEER ELECTRONIC CORP·Filed 1991·Granted Jul 13, 1993·166 cites·6 claims
- 1394US11131938B2Toner and image forming methodCANON KK·Filed 2019·Granted Sep 28, 2021·10 cites·8 claims
- 1490US9958800B2TonerCANON KK·Filed 2017·Granted May 1, 2018·4 cites·10 claims
- 1590US7851074B2Organic electroluminescent display device and chemical compounds for liquid crystalsPIONEER TOHOKU CORP·Filed 2008·Granted Dec 14, 2010·11 cites·7 claims
- 1688US11762307B2TonerCANON KK·Filed 2020·Granted Sep 19, 2023·2 cites·13 claims
- 1788US5276381AOrganic electroluminescent devicePIONEER ELECTRONIC CORP·Filed 1992·Granted Jan 4, 1994·76 cites·3 claims
- 1879US6811808B2Organic electroluminescent display panel and method of manufacturing the samePIONEER TOHOKU CORP·Filed 2001·Granted Nov 2, 2004·23 cites·10 claims
- 1974US9170514B2Polymerizable monomer, polymeric compound, charge control agent containing the polymeric compound, and developer bearing member and toner which contain the charge control agentMURAI YASUAKI·Filed 2012·Granted Oct 27, 2015·2 cites·6 claims
- 2074US7187120B2Organic electroluminescent display panel and method of manufacturing the samePIONEER TOHOKU CORP·Filed 2004·Granted Mar 6, 2007·15 cites·15 claims
- 2174US5104740AElectroluminescent elementPIONEER ELECTRONIC CORP·Filed 1990·Granted Apr 14, 1992·38 cites·28 claims
- 2273US7195826B2Organic electroluminescent display device and chemical compounds for liquid crystalsPIONEER TOHOKU CORP·Filed 2003·Granted Mar 27, 2007·13 cites·17 claims
- 2367US12259684B2Magnetic carrier, two-component developer, and replenishment developerCANON KK·Filed 2022·Granted Mar 25, 2025·0 cites·13 claims
- 2467US9250552B2Polymerizable monomer, polymeric compound, charge control agent containing the polymeric compound, and developer bearing member and toner which contain the charge control agentINOUE KEI·Filed 2012·Granted Feb 2, 2016·1 cites·11 claims
- 2564US5518825AOrganic electroluminescent devicePIONEER ELECTRONIC CORP·Filed 1994·Granted May 21, 1996·23 cites·17 claims
- 2662US6137220AOrganic electroluminescent display with protective film and trapezoidal wallsTOHOKU PIONEER ELECTRONIC·Filed 1998·Granted Oct 24, 2000·79 cites·7 claims
- 2758US10234779B2Toner and method of producing tonerCANON KK·Filed 2017·Granted Mar 19, 2019·0 cites·10 claims
- 2853US12222678B2Magnetic carrier, two-component developer, and replenishment developerCANON KK·Filed 2022·Granted Feb 11, 2025·0 cites·10 claims
- 2952US2024134300A1TonerCANON KK·Filed 2023·Application pending·0 cites
- 3050US2024069457A1Toner and two-component developerCANON KK·Filed 2023·Application pending·0 cites
- 3150US2023408944A1Toner and two-component developerCANON KK·Filed 2023·Application pending·0 cites
- 3249US12164265B2Magnetic carrier, two-component developer, and developer for replenishmentCANON KK·Filed 2022·Granted Dec 10, 2024·0 cites·10 claims
- 3349US2007164257A1Organic electroluminescent display device and chemical compounds for liquid crystalsJUNJI KIDO·Filed 2007·Application pending·0 cites
- 3448US9658550B2Toner for use in electrophotographic systemsCANON KK·Filed 2016·Granted May 23, 2017·0 cites·8 claims
- 3548US2006290616A1Self-emission panelPIONEER TOHOKU CORP·Filed 2006·Application pending·0 cites
- 3648US2023408943A1Toner, toner production method, and two-componentdeveloperCANON KK·Filed 2023·Application pending·0 cites
- 3748US2023408940A1Toner, toner production method, and two-component developerCANON KK·Filed 2023·Application pending·0 cites
- 3847US5346772AOrganic electroluminescence devicePIONEER ELECTRONIC CORP·Filed 1993·Granted Sep 13, 1994·11 cites·18 claims
- 3943US2003185970A1Organic electroluminescent display panel and method of manufacturing the samePIONEER TOHOKU CORP·Filed 2003·Application pending·0 cites
- 4042US2001048982A1Organic electroluminescent display device and chemical compounds for liquid crystalsPIONEER TOHOKU CORP·Filed 2001·Application pending·0 cites
- 4142US2021389688A1Negative-charging tonerCANON KK·Filed 2021·Application pending·0 cites
- 4239US10216106B2Method for producing tonerCANON KK·Filed 2016·Granted Feb 26, 2019·0 cites·10 claims
- 4337US2002146590A1Organic electroluminescent material and device made therefromFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →