Patents by Inventor Koji Daifuku

Koji Daifuku 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: 11971563
    Abstract: Disclosed is a near-infrared absorbing composition, including: a near-infrared absorbing agent; and a solvent, wherein the near-infrared absorbing agent includes at least one of the following Component (A) and Component (B): Component (A): a component composed of a compound having a structure of the following general formula (I) and a metal ion; Component (B): a component composed of a metal complex that is obtainable by a reaction of the compound having the structure of the following general formula (I) and a metal compound.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: April 30, 2024
    Assignee: KONICA MINOLTA, INC.
    Inventors: Koji Daifuku, Yosuke Mizutani, Natsumi Itamoto, Keigo Tamaki, Yutaro Horie, Kenji Hayashi, Issei Nakahara, Takahiko Nojima, Kiyoshi Fukusaka
  • Publication number: 20230340269
    Abstract: A near-infrared absorbing composition includes: an organic dye; and a metal compound. The organic dye includes: at least one of a squarylium dye (A) or a cyanine dye (B) each having an absorption maximum in a range of 680 to 740 nm; and a cyanine dye (C) having an absorption maximum at 760 nm or higher. The metal compound includes at least a phosphonic acid and a copper ion, or a copper phosphonate complex formed from a phosphonic acid and a copper ion.
    Type: Application
    Filed: September 16, 2021
    Publication date: October 26, 2023
    Inventors: Koji DAIFUKU, Natsumi KIRIISHI, Takayuki SUZUKI, Kiyoshi FUKUSAKA
  • Patent number: 11753547
    Abstract: Provided is a near-infrared ray absorbing composition containing at least a near-infrared absorber, a metal compound, and a solvent, wherein the near-infrared absorber contains a metal ion, and the metal compound is a compound having a structure represented by the following Formula (I), Formula (II), or Formula (III), M(OR1)n??Formula (I): Mn+(O?R2—O?)n??Formula (II): (OR3)n-mMn+(?OCOR4)m,??Formula (III): in the above Formulas (I), (II), and (III), M represents at least one metal element selected from the group consisting of titanium, zirconia, and aluminum; when M represents titanium or zirconia, n=4, m=1, 2, 3, or 4; when M represents aluminum, n=3, m=1, 2, or 3; R1 to R4 each independently represent an alkyl group having 1 to 30 carbon atoms, and R1 to R4 may further have a substituent.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: September 12, 2023
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kenji Hayashi, Yosuke Mizutani, Koji Daifuku, Natsumi Itamoto
  • Publication number: 20220171107
    Abstract: Provided is a near-infrared absorbing composition comprising a near-infrared absorber and a solvent, wherein the near-infrared absorber contains at least one of the following component (A) or component (B), Component (A): a component composed of a phosphonic acid compound represented by the following Formula (I), two or more kinds of phosphoric acid ester compounds or sulfonic acid ester compounds having different structures, and copper ions; and Component (B): a component composed of a copper complex obtained by a reaction of a phosphonic acid compound represented by the following Formula (I), two or more kinds of phosphoric acid ester compounds or sulfonic acid ester compounds having different structures, and a copper compound, in Formula (I), R1 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or a fluorinated alkyl group having 1 to 20 carbon atoms.
    Type: Application
    Filed: March 6, 2020
    Publication date: June 2, 2022
    Inventors: Natsumi ITAMOTO, Yosuke MIZUTANI, Koji DAIFUKU, Kenji HAYASHI
  • Publication number: 20220098417
    Abstract: A near infrared absorbing composition includes a near infrared absorber. The near infrared absorber contains at least one of Ingredient (A) and Ingredient (B). Ingredient (A) consists of a first compound having a first structure represented by General Formula (I), a second compound having a second structure represented by General Formula (II), and a copper ion. Ingredient (B) consists of a first copper complex in which the first compound is coordinated and a second copper complex in which the second compound is coordinated. In General Formula (I), R1 represents an alkyl group containing 1-20 carbons or an aryl group containing 6-20 carbons, and may further have a substituent. In General Formula (II), R2 represents an alkyl group containing 1-20 carbons or an aryl group containing 6-20 carbons, and may further have a substituent.
    Type: Application
    Filed: September 8, 2021
    Publication date: March 31, 2022
    Inventors: Natsumi KIRIISHI, Koji DAIFUKU, Takayuki SUZUKI, Kiyoshi FUKUSAKA
  • Publication number: 20210032276
    Abstract: Provided is a near-infrared ray absorbing composition including a near-infrared absorber and a solvent, wherein the near-infrared absorber contains at least one of the following component (A) and component (B); and a compound represented by Formula (I) is contained in the component (A) or component (B) in the range of 0.
    Type: Application
    Filed: May 29, 2019
    Publication date: February 4, 2021
    Inventors: Natsumi ITAMOTO, Koji DAIFUKU, Yosuke MIZUTANI, Keigo TAMAKI, Yutaro HORIE, Kenji HAYASHI, Issei NAKAHARA, Takahiko NOJIMA, Kiyoshi FUKUSAKA
  • Publication number: 20210024754
    Abstract: Provided is a near-infrared ray absorbing composition containing at least a near-infrared absorber, a metal compound, and a solvent, wherein the near-infrared absorber contains a metal ion, and the metal compound is a compound having a structure represented by the following Formula (I), Formula (II), or Formula (III), M(OR1)n??Formula (I): Mn+(O?R2—O?)n??Formula (II): (OR3)n-mMn+(?OCOR4)m,??Formula (III): in the above Formulas (I), (II), and (III), M represents at least one metal element selected from the group consisting of titanium, zirconia, and aluminum; when M represents titanium or zirconia, n=4, m=1, 2, 3, or 4; when M represents aluminum, n=3, m=1, 2, or 3; R1 to R4 each independently represent an alkyl group having 1 to 30 carbon atoms, and R1 to R4 may further have a substituent.
    Type: Application
    Filed: May 13, 2019
    Publication date: January 28, 2021
    Inventors: Kenji HAYASHI, Yosuke MIZUTANI, Koji DAIFUKU, Natsumi ITAMOTO
  • Publication number: 20210026053
    Abstract: Disclosed is a near-infrared absorbing composition, including: a near-infrared absorbing agent; and a solvent, wherein the near-infrared absorbing agent includes at least one of the following Component (A) and Component (B): Component (A): a component composed of a compound having a structure of the following general formula (I) and a metal ion; Component (B): a component composed of a metal complex that is obtainable by a reaction of the compound having the structure of the following general formula (I) and a metal compound.
    Type: Application
    Filed: March 11, 2019
    Publication date: January 28, 2021
    Inventors: Koji DAIFUKU, Yosuke MIZUTANI, Natsumi ITAMOTO, Keigo TAMAKI, Yutaro HORIE, Kenji HAYASHI, Issei NAKAHARA, Takahiko NOJIMA, Kiyoshi FUKUSAKA
  • Patent number: 8729285
    Abstract: A copper complex compound represented by Formula (1) is disclosed. in the formula, groups represented by R is a substituent, n is an integer of from 1 to 5 and the total carbon number contained in (R)n is 14 or more. A toner for electrophotography containing the compound is also disclosed.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: May 20, 2014
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Koji Daifuku, Ryohei Iwamoto, Keiko Ishidai, Kimihiko Ookubo, Kaori Ono, Issei Nakahara
  • Patent number: 8329368
    Abstract: An electrophotographic toner is disclosed. The toner contains a compound of Formula X-1 and a copper complex compound represented by the following Formula (1), which are defined detain in the specification.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: December 11, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Koji Daifuku, Ryohei Iwamoto, Keiko Ishidai, Kimihiko Ookubo, Kaori Ono, Issei Nakahara
  • Patent number: 8269018
    Abstract: A compound represented by Formula (X-1) is disclosed. in the formula, Rx1 and Rx2 each independently represents an alkyl group, Lx is a hydrogen atom or an alkyl group, Gx1 is an alkyl group having 2 or more carbon atoms, Gx2 is an alkyl group or an aromatic hydrocarbon group, Gx3 is a hydrogen atom, a halogen atom, a Gx4-CO—NH— group or a Gx5-N(Gx6)-CO—group, Gx5 and Gx6 each independently represents a hydrogen atom or a substituent, and Qx1, Qx2, Qx3, Qx4 and Qx5 each independently represents a hydrogen atom or a substituent. An electrophotographic toner containing the compound is also disclosed.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: September 18, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Kimihiko Ookubo, Ryohei Iwamoto, Koji Daifuku, Keiko Ishidai, Kaori Ono, Issei Nakahara
  • Publication number: 20110300481
    Abstract: A compound represented by Formula (X-1) is disclosed. in the formula, Rx1 and Rx2 each independently represents an alkyl group, Lx is a hydrogen atom or an alkyl group, Gx1 is an alkyl group having 2 or more carbon atoms, Gx2 is an alkyl group or an aromatic hydrocarbon group, Gx3 is a hydrogen atom, a halogen atom, a Gx4-CO—NH— group or a Gx5-N(Gx6)-CO—group, Gx5 and Gx6 each independently represents a hydrogen atom or a substituent, and Qx1, Qx2, Qx3, Qx4 and Qx5 each independently represents a hydrogen atom or a substituent. An electrophotographic toner containing the compound is also disclosed.
    Type: Application
    Filed: July 27, 2011
    Publication date: December 8, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Kimihiko OOKUBO, Ryohei IWAMOTO, Koji DAIFUKU, Keiko ISHIDAI, Kaori ONO, Issei NAKAHARA
  • Publication number: 20110152556
    Abstract: A copper complex compound represented by Formula (1) is disclosed. in the formula, groups represented by R is a substituent, n is an integer of from 1 to 5 and the total carbon number contained in (R)n is 14 or more. A toner for electrophotography containing the compound is also disclosed.
    Type: Application
    Filed: March 3, 2011
    Publication date: June 23, 2011
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Koji DAIFUKU, Ryohei IWAMOTO, Keiko ISHIDAI, Kimihiko OOKUBO, Kaori ONO, Issei NAKAHARA
  • Patent number: 7943279
    Abstract: A copper complex compound represented by Formula (1) is disclosed. in the formula, groups represented by R is a substituent, n is an integer of from 1 to 5 and the total carbon number contained in (R) n is 14 or more. A toner for electrophotography containing the compound is also disclosed.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: May 17, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Koji Daifuku, Ryohei Iwamoto, Keiko Ishidai, Kimihiko Ookubo, Kaori Ono, Issei Nakahara
  • Patent number: 7749669
    Abstract: An electrophotographic toner which achieves superior coloring without exhibiting any difficulty in dispersibility in thermoplastic resin while exhibiting improved characteristics, is disclosed, comprising a thermoplastic resin and a metal chelate dye contained in the thermoplastic resin and represented by the following formula: M(L1)(L2)n(X1)m(X2)1.W1 Image forming method by use of the toner is also disclosed.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: July 6, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Koji Daifuku, Kaori Ono
  • Patent number: 7678520
    Abstract: A method for producing an electrophotographic toner comprising the steps of: (1) mixing a water-insoluble organic solvent, an oil-soluble dye capable of chelating with a metal, a metal compound and water to form an oil-soluble dye dispersion, (2) removing the organic solvent from the oil-soluble dye dispersion to form colored microscopic particles, and (3) adding an emulsion thermoplastic resin to the colored microscopic particles so as to associate the particles with slow coagulation.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: March 16, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Koji Daifuku, Kaori Ono
  • Patent number: 7595139
    Abstract: A metal complex dye is disclosed, containing a dye as a ligand represented by the following formula (1). A color toner and a color filter containing the metal complex dye are also disclosed.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: September 29, 2009
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Koji Daifuku, Takatugu Suzuki, Kaori Ono
  • Publication number: 20090233207
    Abstract: A compound represented by Formula (X-1) is disclosed. in the formula, Rx1, and Rx2 each independently represents an alkyl group, Lx is a hydrogen atom or an alkyl group, Gx1 is an alkyl group having 2 or more carbon atoms, Gx2 is an alkyl group or an aromatic hydrocarbon group, Gx3 is a hydrogen atom, a halogen atom, a Gx4-CO—NH— group or a Gx5-N(Gx6)-CO— group, Gx5 and Gx6 each independently represents a hydrogen atom or a substituent, and Qx1, Qx2, Qx3, Qx4 and Qx5 each independently represents a hydrogen atom or a substituent. An electrophotographic toner containing the compound is also disclosed.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Kimihiko OOKUBO, Ryohei IWAMOTO, Koji DAIFUKU, Keiko ISHIDAI, Kaori ONO, Issei NAKAHARA
  • Publication number: 20090233209
    Abstract: An electrophotographic toner is disclosed. The toner contains a compound of Formula X-1 and a copper complex compound represented by the following Formula (1), which are defined detain in the specification.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Koji Daifuku, Ryohei Iwamoto, Keiko Ishidai, Kimihiko Ookubo, Kaori Ono, Issei Nakahara
  • Publication number: 20090233208
    Abstract: A copper complex compound represented by Formula (1) is disclosed. in the formula, groups represented by R is a substituent, n is an integer of from 1 to 5 and the total carbon number contained in (R) n is 14 or more. A toner for electrophotography containing the compound is also disclosed.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Koji DAIFUKU, Ryohei IWAMOTO, Keiko ISHIDAI, Kimihiko OOKUBO, Kaori ONO, Issei NAKAHARA