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Ryuji Murayama

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Patents Grantslast 30 patents

  • Information Patent Grant

    Magnetic carrier, two-component developer, and replenishment developer
    • Patent number 12,222,678
    • Issue date Feb 11, 2025
    • Canon Kabushiki Kaisha
    • Ryuji Murayama
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnetic carrier, two-component developer, and developer for replen...
    • Patent number 12,164,265
    • Issue date Dec 10, 2024
    • Canon Kabushiki Kaisha
    • Yuto Onozaki
    • B82 - NANO-TECHNOLOGY
  • Information Patent Grant

    Toner
    • Patent number 11,762,307
    • Issue date Sep 19, 2023
    • Canon Kabushiki Kaisha
    • Junichi Tamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner and image forming method
    • Patent number 11,131,938
    • Issue date Sep 28, 2021
    • Canon Kabushiki Kaisha
    • Ryuji Murayama
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner
    • Patent number 10,877,386
    • Issue date Dec 29, 2020
    • Canon Kabushiki Kaisha
    • Ryuji Murayama
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner
    • Patent number 10,775,710
    • Issue date Sep 15, 2020
    • Canon Kabushiki Kaisha
    • Kentaro Kamae
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner
    • Patent number 10,514,624
    • Issue date Dec 24, 2019
    • Canon Kabushiki Kaisha
    • Junichi Tamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner and method for producing toner
    • Patent number 10,451,990
    • Issue date Oct 22, 2019
    • Canon Kabushiki Kaisha
    • Kentaro Kamae
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner
    • Patent number 10,353,312
    • Issue date Jul 16, 2019
    • Canon Kabushiki Kaisha
    • Kentaro Kamae
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner and method of producing toner
    • Patent number 10,234,779
    • Issue date Mar 19, 2019
    • Canon Kabushiki Kaisha
    • Hayato Ida
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner
    • Patent number 10,228,629
    • Issue date Mar 12, 2019
    • Canon Kabushiki Kaisha
    • Junichi Tamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Method for producing toner
    • Patent number 10,216,106
    • Issue date Feb 26, 2019
    • Canon Kabushiki Kaisha
    • Tomoyo Miyakai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner and method for producing toner
    • Patent number 10,203,619
    • Issue date Feb 12, 2019
    • Canon Kabushiki Kaisha
    • Daisuke Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner and method for producing toner
    • Patent number 10,088,765
    • Issue date Oct 2, 2018
    • Canon Kabushiki Kaisha
    • Tomoyo Miyakai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner and method for producing toner
    • Patent number 10,078,281
    • Issue date Sep 18, 2018
    • Canon Kabushiki Kaisha
    • Hayato Ida
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner and method of producing toner
    • Patent number 10,012,920
    • Issue date Jul 3, 2018
    • Canon Kabushiki Kaisha
    • Takaho Shibata
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner
    • Patent number 9,958,800
    • Issue date May 1, 2018
    • Canon Kabushiki Kaisha
    • Yuya Chimoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner
    • Patent number 9,897,934
    • Issue date Feb 20, 2018
    • Canon Kabushiki Kaisha
    • Junichi Tamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner for use in electrophotographic systems
    • Patent number 9,658,550
    • Issue date May 23, 2017
    • Canon Kabushiki Kaisha
    • Ryuji Murayama
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Polymerizable monomer, polymeric compound, charge control agent con...
    • Patent number 9,250,552
    • Issue date Feb 2, 2016
    • Canon Kabushiki Kaisha
    • Kei Inoue
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Polymerizable monomer, polymeric compound, charge control agent con...
    • Patent number 9,170,514
    • Issue date Oct 27, 2015
    • Canon Kabushiki Kaisha
    • Yasuaki Murai
    • C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

  • Information Patent Application

    TONER
    • Publication number 20240134300
    • Publication date Apr 25, 2024
    • Canon Kabushiki Kaisha
    • HITOSHI SANO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER AND TWO-COMPONENT DEVELOPER
    • Publication number 20240069457
    • Publication date Feb 29, 2024
    • Canon Kabushiki Kaisha
    • RYUJI MURAYAMA
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER, TONER PRODUCTION METHOD, AND TWO-COMPONENTDEVELOPER
    • Publication number 20230408943
    • Publication date Dec 21, 2023
    • Canon Kabushiki Kaisha
    • SHIN KITAMURA
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER AND TWO-COMPONENT DEVELOPER
    • Publication number 20230408944
    • Publication date Dec 21, 2023
    • Canon Kabushiki Kaisha
    • DAISUKE TSUJIMOTO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER, TONER PRODUCTION METHOD, AND TWO-COMPONENT DEVELOPER
    • Publication number 20230408940
    • Publication date Dec 21, 2023
    • Canon Kabushiki Kaisha
    • RYUICHIRO MATSUO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    MAGNETIC CARRIER, TWO-COMPONENT DEVELOPER, AND DEVELOPER FOR REPLEN...
    • Publication number 20220236657
    • Publication date Jul 28, 2022
    • CANON KABUSHIKI KAISHA
    • Yuto Onozaki
    • B82 - NANO-TECHNOLOGY
  • Information Patent Application

    MAGNETIC CARRIER, TWO-COMPONENT DEVELOPER, AND REPLENISHMENT DEVELOPER
    • Publication number 20220236660
    • Publication date Jul 28, 2022
    • Canon Kabushiki Kaisha
    • Ryuji Murayama
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    MAGNETIC CARRIER, TWO-COMPONENT DEVELOPER, AND REPLENISHMENT DEVELOPER
    • Publication number 20220236658
    • Publication date Jul 28, 2022
    • Canon Kabushiki Kaisha
    • Ryuji Murayama
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    NEGATIVE-CHARGING TONER
    • Publication number 20210389688
    • Publication date Dec 16, 2021
    • Canon Kabushiki Kaisha
    • Takaho Shibata
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20210055668
    • Publication date Feb 25, 2021
    • Canon Kabushiki Kaisha
    • Junichi Tamura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    TONER AND IMAGE FORMING METHOD
    • Publication number 20200064751
    • Publication date Feb 27, 2020
    • Canon Kabushiki Kaisha
    • Ryuji Murayama
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20200057397
    • Publication date Feb 20, 2020
    • Canon Kabushiki Kaisha
    • Ryuji Murayama
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER AND METHOD FOR PRODUCING TONER
    • Publication number 20190113858
    • Publication date Apr 18, 2019
    • Canon Kabushiki Kaisha
    • Kentaro Kamae
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20190107793
    • Publication date Apr 11, 2019
    • Canon Kabushiki Kaisha
    • Junichi Tamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20190049869
    • Publication date Feb 14, 2019
    • Canon Kabushiki Kaisha
    • Kentaro Kamae
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20180203370
    • Publication date Jul 19, 2018
    • Canon Kabushiki Kaisha
    • Junichi Tamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    METHOD FOR PRODUCING TONER
    • Publication number 20180143547
    • Publication date May 24, 2018
    • Canon Kabushiki Kaisha
    • Tomoyo Miyakai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER AND METHOD FOR PRODUCING TONER
    • Publication number 20180107128
    • Publication date Apr 19, 2018
    • Canon Kabushiki Kaisha
    • Tomoyo Miyakai
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER AND METHOD OF PRODUCING TONER
    • Publication number 20180088478
    • Publication date Mar 29, 2018
    • Canon Kabushiki Kaisha
    • Hayato Ida
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER AND METHOD FOR PRODUCING TONER
    • Publication number 20180067410
    • Publication date Mar 8, 2018
    • Canon Kabushiki Kaisha
    • Daisuke Yamashita
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER AND METHOD FOR PRODUCING TONER
    • Publication number 20180067411
    • Publication date Mar 8, 2018
    • Canon Kabushiki Kaisha
    • Hayato Ida
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20170363982
    • Publication date Dec 21, 2017
    • Canon Kabushiki Kaisha
    • Junichi Tamura
    • G01 - MEASURING TESTING
  • Information Patent Application

    TONER AND METHOD OF PRODUCING TONER
    • Publication number 20170329245
    • Publication date Nov 16, 2017
    • Canon Kabushiki Kaisha
    • Takaho Shibata
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20170315462
    • Publication date Nov 2, 2017
    • Canon Kabushiki Kaisha
    • Yuya Chimoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER FOR USE IN ELECTROPHOTOGRAPHIC SYSTEMS
    • Publication number 20160349645
    • Publication date Dec 1, 2016
    • Canon Kabushiki Kaisha
    • Ryuji Murayama
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    POLYMERIZABLE MONOMER, POLYMERIC COMPOUND, CHARGE CONTROL AGENT CON...
    • Publication number 20140011129
    • Publication date Jan 9, 2014
    • Canon Kabushiki Kaisha
    • Yasuaki Murai
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Application

    POLYMERIZABLE MONOMER, POLYMERIC COMPOUND, CHARGE CONTROL AGENT CON...
    • Publication number 20140011130
    • Publication date Jan 9, 2014
    • Canon Kabushiki Kaisha
    • Kei Inoue
    • C07 - ORGANIC CHEMISTRY