Patents by Inventor Satoshi Igawa

Satoshi Igawa 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: 11319483
    Abstract: An organic compound represented by the following general formula is provided. In the above formula (1), R11 to R15 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an aralkyl group, an acyl group, or a halogen atom provided that at least one of R11, R13, and R15 represents the alkoxy group or the aryloxy group; and R11 to R15 may form a ring structure therebetween. R5 and R6 each independently represent an alkyl group, an aryl group, or an aralkyl group. In addition, R21 to R24 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an aralkyl group, an acyl group, or a halogen atom and may form a ring structure therebetween. The above groups except the acyl group may be substituted when necessary.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: May 3, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Yamada, Satoshi Igawa, Wataru Kubo, Yuto Ito, Isao Kawata
  • Patent number: 11180950
    Abstract: An electrochromic device according to the present disclosure includes an electrochromic element that includes a first electrode, a second electrode, and an electrochromic layer disposed between the first electrode and the second electrode. The electrochromic layer contains an anodic electrochromic compound and an oxidizable substance. The oxidizable substance is a substance which substantially does not undergo a color change due to oxidation and whose oxidant is not reduced. An oxidation reaction of the oxidizable substance is less likely to occur than an oxidation reaction of the anodic electrochromic compound. A controller is configured to control oxidation of the oxidizable substance based on a charge balance of the electrochromic element.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: November 23, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Wataru Kubo, Kenji Yamada, Satoshi Igawa
  • Patent number: 11104844
    Abstract: An organic compound denoted by formula [1], where each of X1 and X2 is independently selected from an alkyl group optionally having a substituent, an aryl group optionally having a substituent, and an aralkyl group optionally having a substituent, each of R11 to R20 is independently selected from a hydrogen atom and a substituent, Y represents an alkyl group optionally having a substituent or an aryl group optionally having a substituent, and each of A1? and A2? independently represents a monovalent anion.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: August 31, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Yamada, Satoshi Igawa
  • Publication number: 20210191217
    Abstract: An organic compound that absorbs light of a wavelength range from 450 nm to 580 nm in a reduction state and is colored and that is superior in high-temperature drive durability and that is expressed by the following formula [1]. Z1 and Z2 each represent a substituent. R11 to R18 each represent a hydrogen atom or a substituent. R12 and R13 are optionally bound to each other to form a ring. R21 and R22 each represent a hydrogen atom or a substituent. X? represents an anion, and n is an integer greater than or equal to 1. When n is 2 or greater, two or more X?s are the same or different from each other.
    Type: Application
    Filed: December 14, 2020
    Publication date: June 24, 2021
    Inventors: Kenji Yamada, Satoshi Igawa, Kazuho Saeki
  • Publication number: 20210109415
    Abstract: The present disclosure provides an organic compound represented by the following general formula [1]: where Z1 and Z2 are each independently selected from an alkyl group that may have a substituent, an aryl group that may have a substituent, and an aralkyl group that may have a substituent; R11 to R17, R21, and R22 are each independently selected from a hydrogen atom and a substituent; Y1 to Y3 are each independently selected from a carbon atom, a N atom, and (N+-L)(X?); and L is any one of an alkyl group, an aryl group, and an aralkyl group.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Satoshi Igawa, Kenji Yamada
  • Patent number: 10907091
    Abstract: An organic compound according to one embodiment of the present invention is an organic compound represented by general formula (1). Each of X1 and X2 is an alkyl group or the like that may have a substituent. Each of R11 to R18 is a hydrogen atom, an alkyl group that may have a substituent, or the like. Each of R21 and R22 is a hydrogen atom, an alkyl group that may have a substituent, or the like. A1? and A2? independently represent a monovalent anion, respectively.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: February 2, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Igawa, Kenji Yamada
  • Publication number: 20200259106
    Abstract: Provided is an organic metal complex having a structure represented by the following general formula (1): MLmL?n??(1) where: M represents a metal atom selected from Ir, Pt, Rh, Os, and Zn; L and L?, which are different from each other, each represent a bidentate ligand; m represents an integer of 1 to 3 and n represents an integer of 0 to 2, provided that m+n is 3; a partial structure MLm represents a structure represented by the following general formula (2): and a partial structure ML?n represents a structure including a monovalent bidentate ligand.
    Type: Application
    Filed: April 27, 2020
    Publication date: August 13, 2020
    Inventors: JUN KAMATANI, MASASHI HASHIMOTO, SATOSHI IGAWA, SHINJIRO OKADA
  • Publication number: 20200241377
    Abstract: As an example of an EC element in which vertical color separation is suppressed, the present disclosure provides an EC element including a pair of electrodes, a solvent, an anodic EC compound, and a cathodic EC compound. In the EC element, the difference between a solvation free energy of an oxidized form of the anodic EC compound in water and a solvation free energy of the oxidized form in octanol is 35 kcal/mol or more, and the cathodic EC compound has a substituent containing any one element selected from halogens, sulfur, boron, phosphorus, and silicon.
    Type: Application
    Filed: April 6, 2020
    Publication date: July 30, 2020
    Inventors: Wataru Kubo, Kenji Yamada, Satoshi Igawa, Yuto Ito, Isao Kawata
  • Publication number: 20200233277
    Abstract: As an example of an EC element in which vertical color separation is suppressed, the present disclosure provides an EC element including a pair of electrodes, a solvent, an anodic EC compound, and a cathodic EC compound. In the EC element, the difference between a solvation free energy of an oxidized form of the anodic EC compound in water and a solvation free energy of the oxidized form in octanol is 35 kcal/mol or more, and the difference between a solvation free energy of a reduced form of the cathodic EC compound in propylene carbonate and a solvation free energy of the reduced form in octanol is ?35 kcal/mol or less.
    Type: Application
    Filed: April 6, 2020
    Publication date: July 23, 2020
    Inventors: Wataru Kubo, Kenji Yamada, Satoshi Igawa, Yuto Ito, Isao Kawata
  • Publication number: 20200004095
    Abstract: An organic compound denoted by formula [1], where each of X1 and X2 is independently selected from an alkyl group optionally having a substituent, an aryl group optionally having a substituent, and an aralkyl group optionally having a substituent, each of R11 to R20 is independently selected from a hydrogen atom and a substituent, Y represents an alkyl group optionally having a substituent or an aryl group optionally having a substituent, and each of A1? and A2? independently represents a monovalent anion.
    Type: Application
    Filed: June 25, 2019
    Publication date: January 2, 2020
    Inventors: Kenji Yamada, Satoshi Igawa
  • Publication number: 20190348618
    Abstract: Provided is an organic metal complex having a structure represented by the following general formula (1): MLmL?n??(1) where: M represents a metal atom selected from Ir, Pt, Rh, Os, and Zn; L and L?, which are different from each other, each represent a bidentate ligand; m represents an integer of 1 to 3 and n represents an integer of 0 to 2, provided that m+n is 3; a partial structure MLm represents a structure represented by the following general formula (2): and a partial structure ML?n represents a structure including a monovalent bidentate ligand.
    Type: Application
    Filed: July 29, 2019
    Publication date: November 14, 2019
    Inventors: JUN KAMATANI, MASASHI HASHIMOTO, SATOSHI IGAWA, SHINJIRO OKADA
  • Patent number: 10444588
    Abstract: Provided is an electrochromic element, including: a pair of electrodes; and an electrochromic layer disposed between the pair of electrodes and containing a plurality of kinds of organic electrochromic compounds, in which: at least one kind of the plurality of kinds of organic electrochromic compounds includes an organic electrochromic compound having an absorption peak in a wavelength region of 700 nm or more during coloring thereof; and when an optical density in a decolored state thereof is defined as 0, a fluctuation ratio of a transmittance in a wavelength region of from 650 nm or more to 700 nm or less with respect to a central transmittance is within ±15% at an optical density of 0.3.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: October 15, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kenji Yamada, Wataru Kubo, Satoshi Igawa, Kentaro Ito, Satoshi Ota
  • Publication number: 20190241798
    Abstract: An organic compound according to one embodiment of the present invention is an organic compound represented by general formula (1). Each of X1 and X2 is an alkyl group or the like that may have a substituent. Each of R11 to R18 is a hydrogen atom, an alkyl group that may have a substituent, or the like. Each of R21 and R22 is a hydrogen atom, an alkyl group that may have a substituent, or the like. A1? and A2? independently represent a monovalent anion, respectively.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 8, 2019
    Inventors: Satoshi Igawa, Kenji Yamada
  • Patent number: 10367156
    Abstract: Provided is an organic metal complex having a structure represented by the following general formula (1): MLmL?n??(1) where: M represents a metal atom selected from Ir, Pt, Rh, Os, and Zn; L and L?, which are different from each other, each represent a bidentate ligand; m represents an integer of 1 to 3 and n represents an integer of 0 to 2, provided that m+n is 3; a partial structure MLm represents a structure represented by the following general formula (2): and a partial structure ML?n represents a structure including a monovalent bidentate ligand.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: July 30, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Kamatani, Masashi Hashimoto, Satoshi Igawa, Shinjiro Okada
  • Patent number: 10364223
    Abstract: Provided is an organic compound, which is represented by the general formula (1): in the general formula (1), R1 and R2 are each independently selected from the group consisting of an alkyl group having 1 or more and 20 or less carbon atoms, an aryl group, an aralkyl group, and a heteroaryl group, R3 and R4 are each independently selected from an alkyl group having 1 or more and 10 or less carbon atoms, and an alkoxy group having 1 or more and 10 or less carbon atoms, and A1? and A2? each independently represent a monovalent anion.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: July 30, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tetsuya Tamura, Satoshi Igawa
  • Publication number: 20190171077
    Abstract: An electrochromic device according to the present disclosure includes an electrochromic element that includes a first electrode, a second electrode, and an electrochromic layer disposed between the first electrode and the second electrode. The electrochromic layer contains an anodic electrochromic compound and an oxidizable substance. The oxidizable substance is a substance which substantially does not undergo a color change due to oxidation and whose oxidant is not reduced. An oxidation reaction of the oxidizable substance is less likely to occur than an oxidation reaction of the anodic electrochromic compound. A controller is configured to control oxidation of the oxidizable substance based on a charge balance of the electrochromic element.
    Type: Application
    Filed: January 22, 2019
    Publication date: June 6, 2019
    Inventors: Wataru Kubo, Kenji Yamada, Satoshi Igawa
  • Patent number: 10310350
    Abstract: An organic compound represented by General Formula (1), in which, in General Formula (1), R1 represents an alkyl group or an alkoxy group, X1 and X2 are each independently selected from an alkyl group which may have a substituent, an aryl group which may have a substituent, or an aralkyl group which may have a substituent, and A1? and A2? each independently represent a monovalent anion.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: June 4, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Igawa, Jun Yamamoto, Kenji Yamada, Tetsuya Tamura
  • Publication number: 20190136125
    Abstract: An organic compound represented by the following general formula is provided. In the above formula (1), R11 to R15 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an aralkyl group, an acyl group, or a halogen atom provided that at least one of R11, R13, and R15 represents the alkoxy group or the aryloxy group; and R11 to R15 may form a ring structure therebetween. R5 and R6 each independently represent an alkyl group, an aryl group, or an aralkyl group. In addition, R21 to R24 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an aralkyl group, an acyl group, or a halogen atom and may form a ring structure therebetween. The above groups except the acyl group may be substituted when necessary.
    Type: Application
    Filed: January 4, 2019
    Publication date: May 9, 2019
    Inventors: Kenji Yamada, Satoshi Igawa, Wataru Kubo, Yuto Ito, Isao Kawata
  • Patent number: 10208244
    Abstract: An organic compound represented by the following general formula is provided. In the above formula (1), R11 to R15 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an aralkyl group, an acyl group, or a halogen atom provided that at least one of R11, R13, and R15 represents the alkoxy group or the aryloxy group; and R11 to R15 may form a ring structure therebetween, R5 and R6 each independently represent an alkyl group, an aryl group, or an aralkyl group. In addition, R21 to R24 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, an aralkyl group, an acyl group, or a halogen atom and may form a ring structure therebetween. The above groups except the acyl group may be substituted when necessary.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: February 19, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Yamada, Satoshi Igawa, Wataru Kubo, Yuto Ito, Isao Kawata
  • Publication number: 20190002758
    Abstract: An organic compound is represented by general formula (1) below: where X1 and X2 are each independently selected from the group consisting of an alkyl group, an aryl group, and an aralkyl group; R11 to R16 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, a heterocyclic group, and a halogen atom; R21 and R22 are each independently selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, and an aralkyl group; and A1? and A2? each independently represent a monovalent anion.
    Type: Application
    Filed: September 7, 2018
    Publication date: January 3, 2019
    Inventors: Satoshi Igawa, Jun Yamamoto, Kenji Yamada, Tetsuya Tamura