Patents by Inventor Kazumi Nii

Kazumi Nii 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).

  • Patent number: 11393989
    Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: July 19, 2022
    Assignee: UDC IRELAND LIMITED
    Inventors: Kazumi Nii, Kousuke Watanabe, Tatsuya Igarashi, Seiji Ichijima, Toshihiro Ise
  • Publication number: 20190355918
    Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
    Type: Application
    Filed: July 31, 2019
    Publication date: November 21, 2019
    Inventors: Kazumi Nii, Kousuke Watanabe, Tatsuya Igarashi, Seiji Ichijima, Toshihiro Ise
  • Patent number: 10396299
    Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: August 27, 2019
    Assignee: UDC IRELAND LIMITED
    Inventors: Kazumi Nii, Kousuke Watanabe, Tatsuya Igarashi, Seiji Ichijima, Toshihiro Ise
  • Patent number: 10153444
    Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: December 11, 2018
    Assignee: UDC IRELAND LIMITED
    Inventors: Kazumi Nii, Kousuke Watanabe, Tatsuya Igarashi, Seiji Ichijima, Toshihiro Ise
  • Publication number: 20180083208
    Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 22, 2018
    Inventors: Kazumi Nii, Kousuke Watanabe, Tatsuya Igarashi, Seiji Ichijima, Toshiro Ise
  • Publication number: 20150084028
    Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
    Type: Application
    Filed: November 26, 2014
    Publication date: March 26, 2015
    Inventors: Kazumi Nii, Kousuke Watanabe, Tatsuya Igarashi, Seiji Ichijima, Toshiro Ise
  • Patent number: 8940415
    Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: January 27, 2015
    Assignee: UDC Ireland Limited
    Inventors: Kazumi Nii, Kousuke Watanabe, Tatsuya Igarashi, Seiji Ichijima, Toshihiro Ise
  • Patent number: 8841651
    Abstract: A photoelectric conversion element is provided and includes: a conductive thin layer; an organic photoelectric conversion layer including a compound represented by formula (I); and a transparent conductive thin layer, in this order: In the formula (I), X represents O, S or N—R10; Rx and Ry each independently represents a hydrogen atom or a substituent, at least one of Rx and Ry is an electron-withdrawing group, and Rx and Ry may be connected to each other to form a ring, provided that Rx and Ry do not represent a cyano group at the same time; R7 to R10 each independently represents a hydrogen atom or a substituent, and R8 and R9 may be connected to each other to form a ring; L represents a linking group comprising a conjugated bond; and D1 represents a group of atoms.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: September 23, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Tetsuro Mitsui, Kimiatsu Nomura, Kazumi Nii
  • Patent number: 8796490
    Abstract: A production method of a triarylamine compound including: producing a particular triarylamine compound by performing a reaction between a specific halogenated triarylamine compound and a specific olefin in the presence of palladium and alkylphosphine.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: August 5, 2014
    Assignee: Fujifilm Corporation
    Inventors: Kazunari Yagi, Kazumi Nii
  • Patent number: 8742108
    Abstract: A light-emitting material comprises iridium and at least one ligand represented by the following formula: wherein R11 and R12 each represents an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, a cyano group or a cyclic structure obtained by connection of one of a plurality of R11s to another of said plurality of R11s, or one of a plurality of R12s to another of said plurality of R12s, or one of the R11s to one of the R12s; m1 represents an integer from 0 to 4; m2 represents an integer from 0 to 6.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: June 3, 2014
    Assignee: UDC Ireland Limited
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Patent number: 8741513
    Abstract: The present invention provides a novel alizarin derivative compound and a simplified and low cost method for preparing an alizarin derivative compound including: obtaining a compound represented by Formula (2) using a compound represented by Formula (3); and obtaining an alizarin derivative compound represented by Formula (1) using the compound represented by Formula (2); in Formulae (1) to (3), R1 represents a hydrogen atom or a substituent; n represents an integer of 1 to 3, L represents a specific alkyl group; Q represents an atomic group needed to form an aromatic ring or a heteroaromatic ring with adjacent carbon atoms; and P represents an atomic group which includes an atom(s) selected from a hydrogen atom, a carbon atom, an oxygen atom, a sulfur atom, a silicon atom and a boron atom, and which is needed to form a ring structure group with adjacent two oxygen atoms and two carbon atoms;
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: June 3, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Keita Takahashi, Kazumi Nii, Kazunari Yagi
  • Patent number: 8603370
    Abstract: A near-infrared absorptive liquid dispersion, which contains a near-infrared absorptive compound represented by formula (1) that is dispersed in a form of fine particles in a dispersing medium: wherein R1a and R1b may be the same or different, and each independently represent an alkyl group, an aryl group, or a heteroaryl group; R2 and R3 each independently represent a hydrogen atom or a substituent, and at least one of R2 and R3 is an electron withdrawing group; R2 may be bonded to R3 to form a ring; and R4 represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, a substituted boron, or a metal atom, and R4 may be covalently bonded or coordinately bonded to at least one among R1a, R1b and R3.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: December 10, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Shunya Kato, Kazumi Nii
  • Publication number: 20120309967
    Abstract: A light-emitting material comprises iridium and at least one ligand represented by the following formula: wherein R11 and R12 each represents an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, a cyano group or a cyclic structure obtained by connection of one of a plurality of R11s to another of said plurality of R11s, or one of a plurality of R12s to another of said plurality of R12s, or one of the R11s to one of the R12s; m1 represents an integer from 0 to 4; m2 represents an integer from 0 to 6.
    Type: Application
    Filed: August 10, 2012
    Publication date: December 6, 2012
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Patent number: 8303863
    Abstract: A fine particle which contains a compound represented by formula (1): wherein R1a and R1b may be the same or different, and each independently represent an alkyl group, an aryl group, or a heteroaryl group; R2 and R3 each independently represent a hydrogen atom or a substituent, and at least one of R2 and R3 is an electron withdrawing group; R2 may be bonded to R3 to form a ring; R4 represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, a substituted boron, or a metal atom; and R4 may be covalently bonded or coordinately bonded to at least one among R1a, R1b and R3.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: November 6, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Kazumi Nii, Shunya Kato, Yoshihiro Jimbo
  • Publication number: 20120244462
    Abstract: The present invention provides a novel alizarin derivative compound and a simplified and low cost method for preparing an alizarin derivative compound including: obtaining a compound represented by Formula (2) using a compound represented by Formula (3); and obtaining an alizarin derivative compound represented by Formula (1) using the compound represented by Formula (2); in Formulae (1) to (3), R1 represents a hydrogen atom or a substituent; n represents an integer of 1 to 3, L represents a specific alkyl group; Q represents an atomic group needed to form an aromatic ring or a heteroaromatic ring with adjacent carbon atoms; and P represents an atomic group which includes an atom(s) selected from a hydrogen atom, a carbon atom, an oxygen atom, a sulfur atom, a silicon atom and a boron atom, and which is needed to form a ring structure group with adjacent two oxygen atoms and two carbon atoms;
    Type: Application
    Filed: December 3, 2010
    Publication date: September 27, 2012
    Applicant: FUJIFILM Corporation
    Inventors: Keita Takahashi, Kazumi Nii, Kazunari Yagi
  • Patent number: 8247964
    Abstract: A light-emitting material comprises iridium and at least one ligand represented by the following formula: wherein R11 and R12 each represents an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, a cyano group or a cyclic structure obtained by connection of one of a plurality of R11s to another of said plurality of R11s, or one of a plurality of R12s to another of said plurality of R12s, or one of the R11s to one of the R12s; m1 represents an integer from 0 to 4; m2 represents an integer from 0 to 6.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: August 21, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Publication number: 20120169220
    Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
    Type: Application
    Filed: March 14, 2012
    Publication date: July 5, 2012
    Inventors: Kazumi Nii, Kousuke Watanabe, Tatsuya Igarashi, Seiji Ichijima, Toshihiro Ise
  • Patent number: 8211553
    Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: July 3, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Kazumi Nii, Kousuke Watanabe, Tatsuya Igarashi, Seiji Ichijima, Toshihiro Ise
  • Publication number: 20120004410
    Abstract: A light-emitting material comprises iridium and at least one ligand represented by the following formula: wherein R11 and R12 each represents an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, a cyano group or a cyclic structure obtained by connection of one of a plurality of R11s to another of said plurality of R11s, or one of a plurality of R12s to another of said plurality of R12s, or one of the R11s to one of the R12s; m1 represents an integer from 0 to 4; m2 represents an integer from 0 to 6.
    Type: Application
    Filed: September 2, 2011
    Publication date: January 5, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Tatsuya IGARASHI, Keizo KIMURA, Kazumi NII
  • Publication number: 20110269994
    Abstract: A production method of a triarylamine compound including: producing a particular triarylamine compound by performing a reaction between a specific halogenated triarylamine compound and a specific olefin in the presence of palladium and alkylphosphine.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 3, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Kazunari YAGI, Kazumi Nii