Patents by Inventor Masanobu Kotsubo

Masanobu Kotsubo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Organic electron transport material and organic electroluminescent element using same
    Patent number: 11063223
    Abstract: An organic electron transport material, which includes a phosphine oxide derivative represented by the following Formula (1): R1 represents an atomic group which has one or more of either or both of aryl and heteroaryl groups and may have one or more phosphine oxide groups, R2 to R11 each independently represent an atom or an atomic group selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a nitro group, a carboxyl group, a formyl group, a carbonyl group, an alkoxycarbonyl group, and a trifluoromethyl group.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: July 13, 2021
    Assignee: Dyden Corporation
    Inventors: Masataka Watanabe, Masanobu Kotsubo, Tomoko Fukushima, Izumi Maki, Mitsuharu Noto
  • Organic electron transport material and organic electroluminescent element using same
    Patent number: 11031561
    Abstract: An organic electron transport material, which includes a phosphine oxide derivative represented by the following Formula (1): R1 represents an atomic group which has either or both of one or more aryl groups and one or more heteroaryl groups and which may have one or more phosphine oxide group, and R2 to R9 each independently represent an atom or an atomic group selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a C1-C12 linear or branched alkyl group, a linear or branched fluoroalkyl group, an aryl group, a substituted aryl group, a heteroaryl group, and a substituted heteroaryl group.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: June 8, 2021
    Assignee: Dyden Corporation
    Inventors: Tsuyoshi Hayashida, Masataka Watanabe, Masanobu Kotsubo, Izumi Maki, Mitsuharu Noto
  • ORGANIC ELECTRON TRANSPORT MATERIAL AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME
    Publication number: 20200168807
    Abstract: An organic electron transport material, which includes a phosphine oxide derivative represented by the following Formula (1): R1 represents an atomic group which has either or both of one or more aryl groups and one or more heteroaryl groups and which may have one or more phosphine oxide group, and R2 to R9 each independently represent an atom or an atomic group selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a C1-C12 linear or branched alkyl group, a linear or branched fluoroalkyl group, an aryl group, a substituted aryl group, a heteroaryl group, and a substituted heteroaryl group.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 28, 2020
    Inventors: Tsuyoshi Hayashida, Masataka Watanabe, Masanobu Kotsubo, Izumi Maki, Mitsuharu Noto
  • ORGANIC ELECTRON TRANSPORT MATERIAL AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME
    Publication number: 20180375032
    Abstract: An organic electron transport material, which includes a phosphine oxide derivative represented by the following Formula (1): R1 represents an atomic group which has one or more of either or both of aryl and heteroaryl groups and may have one or more phosphine oxide groups, R2 to R11 each independently represent an atom or an atomic group selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a nitro group, a carboxyl group, a formyl group, a carbonyl group, an alkoxycarbonyl group, and a trifluoromethyl group.
    Type: Application
    Filed: November 16, 2016
    Publication date: December 27, 2018
    Inventors: Masataka Watanabe, Masanobu Kotsubo, Tomoko Fukushima, Izumi Maki, Mitsuharu Noto