TREA

Kenji Ookubo

Follow

Person

  • Atsugi-shi, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Toner
    • Patent number 12,346,064
    • Issue date Jul 1, 2025
    • Canon Kabushiki Kaisha
    • Masashi Kawamura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Toner
    • Patent number 12,314,005
    • Issue date May 27, 2025
    • Canon Kabushiki Kaisha
    • Masashi Kawamura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Toner
    • Patent number 11,714,363
    • Issue date Aug 1, 2023
    • Canon Kabushiki Kaisha
    • Kenji Ookubo
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Method for producing compound having amide bond and also having alk...
    • Patent number 11,274,179
    • Issue date Mar 15, 2022
    • Canon Kabushiki Kaisha
    • Masashi Kawamura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Toner
    • Patent number 11,249,412
    • Issue date Feb 15, 2022
    • Canon Kabushiki Kaisha
    • Masashi Kawamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner
    • Patent number 11,181,845
    • Issue date Nov 23, 2021
    • Canon Kabushiki Kaisha
    • Taku Shimoda
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnetic toner and image-forming method
    • Patent number 10,545,420
    • Issue date Jan 28, 2020
    • Canon Kabushiki Kaisha
    • Tetsuya Kinumatsu
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Method of producing toner
    • Patent number 9,880,478
    • Issue date Jan 30, 2018
    • Canon Kabushiki Kaisha
    • Tsutomu Shimano
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Method for manufacturing organic EL display device
    • Patent number 9,219,253
    • Issue date Dec 22, 2015
    • Canon Kabushiki Kaisha
    • Nozomu Izumi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Method of producing fluorite crystal, fluorite and optical system i...
    • Patent number 7,651,861
    • Issue date Jan 26, 2010
    • Canon Kabushiki Kaisha
    • Kenji Ookubo
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Method of assaying fluorite sample and method of producing fluorite...
    • Patent number 7,035,306
    • Issue date Apr 25, 2006
    • Canon Kabushiki Kaisha
    • Kenji Ookubo
    • G01 - MEASURING TESTING

Patents Applicationslast 30 patents

  • Information Patent Application

    TONER
    • Publication number 20250181002
    • Publication date Jun 5, 2025
    • Canon Kabushiki Kaisha
    • KENJI OOKUBO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    PROCESS CARTRIDGE
    • Publication number 20250181010
    • Publication date Jun 5, 2025
    • Canon Kabushiki Kaisha
    • MASASHI UNO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20250181003
    • Publication date Jun 5, 2025
    • Canon Kabushiki Kaisha
    • DAI NOZAKI
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    PROCESS CARTRIDGE AND PROCESS CARTRIDGE SET
    • Publication number 20250181004
    • Publication date Jun 5, 2025
    • Canon Kabushiki Kaisha
    • SHOHEI KOTOTANI
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20240385546
    • Publication date Nov 21, 2024
    • Canon Kabushiki Kaisha
    • DAI NOZAKI
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20240027929
    • Publication date Jan 25, 2024
    • Canon Kabushiki Kaisha
    • KENJI OOKUBO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20240019792
    • Publication date Jan 18, 2024
    • Canon Kabushiki Kaisha
    • NAOYA ISONO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20230400789
    • Publication date Dec 14, 2023
    • Canon Kabushiki Kaisha
    • MASAYA KOMURO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20230384702
    • Publication date Nov 30, 2023
    • Canon Kabushiki Kaisha
    • KEISUKE ADACHI
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    CORE-SHELL PARTICLE, AND TONER
    • Publication number 20230384705
    • Publication date Nov 30, 2023
    • Canon Kabushiki Kaisha
    • KENJI OOKUBO
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20220128919
    • Publication date Apr 28, 2022
    • Canon Kabushiki Kaisha
    • Masashi Kawamura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    TONER AND METHOD FOR MANUFACTURING TONER
    • Publication number 20220128916
    • Publication date Apr 28, 2022
    • Canon Kabushiki Kaisha
    • Yu Yoshida
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20220128915
    • Publication date Apr 28, 2022
    • Canon Kabushiki Kaisha
    • Takayuki Toyoda
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20210405549
    • Publication date Dec 30, 2021
    • Canon Kabushiki Kaisha
    • Kenji Ookubo
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20200341398
    • Publication date Oct 29, 2020
    • Canon Kabushiki Kaisha
    • Masashi Kawamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    METHOD FOR PRODUCING COMPOUND HAVING AMIDE BOND AND ALSO HAVING ALK...
    • Publication number 20200339744
    • Publication date Oct 29, 2020
    • Canon Kabushiki Kaisha
    • Masashi Kawamura
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    TONER
    • Publication number 20200341395
    • Publication date Oct 29, 2020
    • Canon Kabushiki Kaisha
    • Kenji Ookubo
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20200341400
    • Publication date Oct 29, 2020
    • Canon Kabushiki Kaisha
    • Taku Shimoda
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    MAGNETIC TONER AND IMAGE-FORMING METHOD
    • Publication number 20190011846
    • Publication date Jan 10, 2019
    • Canon Kabushiki Kaisha
    • TETSUYA KINUMATSU
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    TONER
    • Publication number 20170299972
    • Publication date Oct 19, 2017
    • Canon Kabushiki Kaisha
    • Masatake Tanaka
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    METHOD OF PRODUCING TONER
    • Publication number 20170199474
    • Publication date Jul 13, 2017
    • Canon Kabushiki Kaisha
    • Tsutomu Shimano
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    THIN FILM PATTERNING METHOD
    • Publication number 20120273457
    • Publication date Nov 1, 2012
    • Canon Kabushiki Kaisha
    • Shigeru Kido
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Application

    METHOD FOR MANUFACTURING ORGANIC EL DISPLAY DEVICE
    • Publication number 20120276484
    • Publication date Nov 1, 2012
    • Canon Kabushiki Kaisha
    • Nozomu Izumi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Method of producing fluorite crystal, fluorite and optical system i...
    • Publication number 20060153263
    • Publication date Jul 13, 2006
    • Canon Kabushiki Kaisha
    • Kenji Ookubo
    • C30 - CRYSTAL GROWTH
  • Information Patent Application

    Information acquisition method, information acquisition apparatus a...
    • Publication number 20050282289
    • Publication date Dec 22, 2005
    • Canon Kabushiki Kaisha
    • Kenji Ookubo
    • G01 - MEASURING TESTING
  • Information Patent Application

    Method of assaying fluorite sample and method of producing fluorite...
    • Publication number 20030027349
    • Publication date Feb 6, 2003
    • Kenji Ookubo
    • C30 - CRYSTAL GROWTH