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).

  • 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
  • Patent number: 8048535
    Abstract: An organic electroluminescent device comprising a pair of electrodes and a light emitting layer, a hole transport layer containing a hole transporting material, and an electron transport layer provided between the pair of electrodes wherein, the light emitting layer contains at least two host materials and at least one red phosphorescent material, and the hole transporting material in the hole transport layer has a small ionization potential than the two host materials in the light emitting layer.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: November 1, 2011
    Assignee: Fujifiilm Corporation
    Inventors: Kazumi Nii, Tatsuya Igarashi, Saisuke Watanabe, Toshihiro Ise, Hisashi Okada
  • Patent number: 8039630
    Abstract: The present invention relates to a cationic compound denoted by the general formula (I). In general formula (I), Ar1 and Ar2 each independently denote an optionally substituted aryl group or aromatic heterocyclic group, L1 denotes a single bond or a divalent linkage group, with at least one from among Ar1, Ar2 and L1 comprising one or more onium cations; R3 and R4 each independently denote a substituent and may form a ring with a benzene ring substituted; m3 and m4 each independently denote an integer ranging from 0 to 4, and plural R3s and R4s may be identical or different from each other when m3 and m4 are an integer ranging from 2 to 4.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: October 18, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Kazumi Nii, Tatsuo Mikami
  • Patent number: 8034935
    Abstract: A synthesis method of a compound represented by following formula (24), the method comprising reacting at least one of a ligand and a dissociation product thereof with an iridium compound at a room temperature or at an elevated temperatures in the presence or absence of a solvent or in the presence or absence of a base:
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: October 11, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Publication number: 20110195235
    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: Application
    Filed: October 8, 2009
    Publication date: August 11, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Shunya Kato, Kazumi Nii
  • Patent number: 7994319
    Abstract: A synthesis method of a compound represented by formula (23), the method comprising reacting at least one of a ligand and a dissociation product thereof with an iridium compound at a room temperature or at an elevated temperatures in the presence or absence of a solvent or in the presence or absence of a base:
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: August 9, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Publication number: 20110139969
    Abstract: A photoelectric conversion device includes an organic photoelectric conversion film intervening between at least two electrodes, the organic photoelectric conversion film including a positive hole transporting photoelectric conversion film and an electron transporting photoelectric conversion film, wherein each of the positive hole transporting photoelectric conversion film and the electron transporting photoelectric conversion film has absorption in a visible range, and a difference in wavelength between longer wavelength ends of absorption of the positive hole transporting photoelectric conversion film and the electron transporting photoelectric conversion film is 50 nm or less.
    Type: Application
    Filed: February 28, 2011
    Publication date: June 16, 2011
    Applicant: FUJIFILM CORPORATION
    Inventor: Kazumi NII
  • Patent number: 7951945
    Abstract: A compound represented by following formula (24): wherein R11 and R12 each represents a substituent; m1 represents an integer of from 0 to 4; m2 represents an integer of from 0 to 6; Z2 represents an atomic group which forms an aryl ring or a heteroaryl ring; Z3 represents an atomic group which forms a nitrogen-containing heteroaryl ring; and n1 represents an integer of from 1 to 3.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: May 31, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Patent number: 7951472
    Abstract: An organic light-emitting device comprising a light-emitting layer or a plurality of thin organic compound layers containing a light emitting layer interposed between a pair of electrodes, wherein at least one layer comprises at least one light emitting material containing a compound having a partial structure represented by following formula (21) or a tautomer thereof: wherein the compound having the partial structure represented by formula (21) has two or more different ligands.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 31, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Patent number: 7951946
    Abstract: A light-emitting material comprising a compound having a partial structure represented by following formula (21) or a tautomer thereof:
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 31, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Publication number: 20110071293
    Abstract: A synthesis method of a compound represented by formula (23), the method comprising reacting at least one of a ligand and a dissociation product thereof with an iridium compound at a room temperature or at an elevated temperatures in the presence or absence of a solvent or in the presence or absence of a base:
    Type: Application
    Filed: November 30, 2010
    Publication date: March 24, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuya IGARASHI, Keizo Kimura, Kazumi Nii
  • Publication number: 20110071292
    Abstract: A synthesis method of a compound represented by following formula (24), the method comprising reacting at least one of a ligand and a dissociation product thereof with an iridium compound at a room temperature or at an elevated temperatures in the presence or absence of a solvent or in the presence or absence of a base:
    Type: Application
    Filed: November 30, 2010
    Publication date: March 24, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuya IGARASHI, Keizo Kimura, Kazumi Nii
  • Publication number: 20110012075
    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: Application
    Filed: March 27, 2009
    Publication date: January 20, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Kazumi Nii, Shunya Kato, Yoshihiro Jimbo
  • Publication number: 20100240895
    Abstract: A compound represented by following formula (24): wherein R11 and R12 each represents a substituent; m1 represents an integer of from 0 to 4; m2 represents an integer of from 0 to 6; Z2 represents an atomic group which forms an aryl ring or a heteroaryl ring; Z3 represents an atomic group which forms a nitrogen-containing heteroaryl ring; and n1 represents an integer of from 1 to 3.
    Type: Application
    Filed: March 15, 2010
    Publication date: September 23, 2010
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Publication number: 20100171113
    Abstract: An organic light-emitting device comprising a light-emitting layer or a plurality of thin organic compound layers containing a light emitting layer interposed between a pair of electrodes, wherein at least one layer comprises at least one light emitting material containing a compound having a partial structure represented by following formula (21) or a tautomer thereof: wherein the compound having the partial structure represented by formula (21) has two or more different ligands.
    Type: Application
    Filed: March 16, 2010
    Publication date: July 8, 2010
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuya IGARASHI, Keizo Kimura, Kazumi Nii
  • Publication number: 20100174069
    Abstract: A light-emitting material comprising a compound having a partial structure represented by following formula (21) or a tautomer thereof:
    Type: Application
    Filed: March 16, 2010
    Publication date: July 8, 2010
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuya IGARASHI, Keizo Kimura, Kazumi Nii
  • Publication number: 20100174070
    Abstract: A compound represented by following formula (23): wherein R11 and R12 each represents a substituent; R13, R14 and R15 each represents a hydrogen atom or a substituent; m1 represents an integer of from 0 to 4; and m2 represents an integer of from 0 to 6.
    Type: Application
    Filed: March 16, 2010
    Publication date: July 8, 2010
    Applicant: FUJIFILM CORPORATION
    Inventors: TATSUYA IGARASHI, KEIZO KIMURA, KAZUMI NII
  • Publication number: 20100174071
    Abstract: A synthesis method of a compound having a partial structure represented by following formula (21) or a tautomer thereof, the method comprising reacting at least one of a ligand and a dissociation product thereof with an iridium compound at a room temperature or at an elevated temperatures in the presence or absence of a solvent or in the presence or absence of a base:
    Type: Application
    Filed: March 16, 2010
    Publication date: July 8, 2010
    Applicant: FUJIFILM Corporation
    Inventors: Tatsuya Igarashi, Keizo Kimura, Kazumi Nii
  • Patent number: 7740956
    Abstract: An organic electroluminescent device comprising: a pair of electrodes; and at least one organic layer between the pair of electrodes, the at least one organic layer between the pair of electrodes, the at least one organic layer including a luminescent layer, wherein the luminescent layer contains at least one electron injection/transport compound, at least one hole injection/transport compound, and at least one green or blue phosphorescent compound; and the electron injection/transport compound and the hole injection/transport compound each has a minimum triplet exciton energy value which is equal to or more than that of the green or blue phosphorescent compound.
    Type: Grant
    Filed: December 26, 2003
    Date of Patent: June 22, 2010
    Assignee: Fujifilm Corporation
    Inventors: Tatsuya Igarashi, Saisuke Watanabe, Toshihiro Ise, Hisashi Okada, Kazumi Nii
  • Patent number: 7683365
    Abstract: An image pickup device comprises an organic photoelectric conversion film sandwiched between at least two electrodes, wherein the organic photoelectric conversion file comprises a specific quinacridone derivative or a specific quinazoline derivative.
    Type: Grant
    Filed: August 30, 2005
    Date of Patent: March 23, 2010
    Assignee: FUJIFILM Corporation
    Inventor: Kazumi Nii