Patents by Inventor Isao Kawata

Isao Kawata 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: 20230343591
    Abstract: A film forming method of forming a film made of a curable composition, includes an arranging step of arranging the curable composition on an underlayer of a substrate including a base member and the underlayer arranged on the base member, a contact step of bringing the curable composition and a mold into contact with each other after the arranging step, a curing step of curing the curable composition after the contact step, and a separation step of separating the curable composition and the mold after the curing step, wherein a gas filling a space between the underlayer and the mold exists in the contact step, and a solubility coefficient of the gas with respect to the underlayer is 0.5 kg/m3·atm or more and 10 kg/m3·atm or less.
    Type: Application
    Filed: June 16, 2023
    Publication date: October 26, 2023
    Inventors: YUTO ITO, TOSHIKI ITO, ISAO KAWATA
  • Patent number: 11661546
    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: Grant
    Filed: April 6, 2020
    Date of Patent: May 30, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Wataru Kubo, Kenji Yamada, Satoshi Igawa, Yuto Ito, Isao Kawata
  • Publication number: 20220267256
    Abstract: The present disclosure provides an organic compound that has a mother skeleton with a fused-ring structure, an electron-withdrawing group bonded to the mother skeleton, and an electron-donating group bonded to the mother skeleton, wherein the electron-withdrawing group is bonded at a position satisfying the following relationship in the mother skeleton.
    Type: Application
    Filed: April 29, 2022
    Publication date: August 25, 2022
    Inventors: Satoru Shiobara, Naoki Yamada, Hirokazu Miyashita, Yuto Ito, Isao Kawata, Jun Kamatani
  • Patent number: 11411193
    Abstract: An organic light emitting element includes, in sequence, an anode, a first light emitting layer, a second light emitting layer, and a cathode. The first light emitting layer includes a first compound and a first light emitting material. The second light emitting layer includes a second compound and a second light emitting material having an energy gap different from an energy gap of the first light emitting material. The organic light emitting element satisfies relations (a) to (c). LUMO(H1)>LUMO(D1)??(a) LUMO(H2)>LUMO(D2)??(b) LUMO(H2)?LUMO(D2)>LUMO(H1)?LUMO(D1)??(c) Where LUMO (H1), LUMO (D1), LUMO (H2), and LUMO (D2) represent a LUMO level of the first compound, a LUMO level of the first light emitting material, a LUMO level of the second compound, and a LUMO level of the second light emitting material, respectively.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: August 9, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirokazu Miyashita, Itaru Takaya, Naoki Yamada, Isao Kawata, Yuto Ito, Jun Kamatani
  • 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: 11128791
    Abstract: Provided is a photoelectric conversion element including an anode, a photoelectric conversion layer that contains a first organic semiconductor, a second organic semiconductor, and a third organic semiconductor, and a cathode. As each of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor, a low-molecular weight organic semiconductor is used. The first organic semiconductor, the second organic semiconductor, and the third organic semiconductor have mass ratios that satisfy the following relationship: the first organic semiconductor?the second organic semiconductor?the third organic semiconductor. Further, when a total amount of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor is 100 mass %, a content of the second organic semiconductor is 6 mass % or more, and a content of the third organic semiconductor is 3 mass % or more.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: September 21, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Takahashi, Satoru Shiobara, Jun Kamatani, Naoki Yamada, Tomona Yamaguchi, Hiroki Ohrui, Hironobu Iwawaki, Masumi Itabashi, Yosuke Nishide, Hirokazu Miyashita, Norifumi Kajimoto, Moe Takahira, Isao Kawata, Yuto Ito
  • Publication number: 20210070677
    Abstract: An organic compound represented by formula [1] is provided. Ring A is a polycyclic aromatic hydrocarbon ring having a fluoranthene skeleton and having 16 to 60 carbon atoms and optionally has, as a substituent, a substituted or unsubstituted alkyl group or the like. Rings B1 and B2 are aromatic hydrocarbon rings having 6 to 18 carbon atoms and each have two or more electron withdrawing groups. Q1 and Q2 respectively represent one of the electron withdrawing groups of the ring B1 and one of the electron withdrawing groups of the ring B2, and are respectively located at an ortho position of the ring B1 and at an ortho position of the ring B2 with respect to the ring A.
    Type: Application
    Filed: September 2, 2020
    Publication date: March 11, 2021
    Inventors: Hirokazu Miyashita, Naoki Yamada, Satoru Shiobara, Isao Kawata, Yuto Ito, Jun Kamatani
  • Publication number: 20210036232
    Abstract: An organic compound represented by formula [1]: wherein in formula [1], R1 to R10 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 an amino group, provided that at least one of R6 and R9 is a methyl group, and sets of R1 and R2, R2 and R3, and R3 and R4 are each independently optionally taken together to form a ring.
    Type: Application
    Filed: July 29, 2020
    Publication date: February 4, 2021
    Inventors: Satoru Shiobara, Naoki Yamada, Hirokazu Miyashita, Yuto Ito, Isao Kawata, Jun Kamatani
  • Publication number: 20200403173
    Abstract: An organic light emitting element includes, in sequence, an anode, a first light emitting layer, a second light emitting layer, and a cathode. The first light emitting layer includes a first compound and a first light emitting material. The second light emitting layer includes a second compound and a second light emitting material having an energy gap different from an energy gap of the first light emitting material. The organic light emitting element satisfies relations (a) to (c). LUMO(H1)>LUMO(D1)??(a) LUMO(H2)>LUMO(D2)??(b) LUMO(H2)?LUMO(D2)>LUMO(H1)?LUMO(D1)??(c) Where LUMO (H1), LUMO (D1), LUMO (H2), and LUMO (D2) represent a LUMO level of the first compound, a LUMO level of the first light emitting material, a LUMO level of the second compound, and a LUMO level of the second light emitting material, respectively.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 24, 2020
    Inventors: Hirokazu Miyashita, Itaru Takaya, Naoki Yamada, Isao Kawata, Yuto Ito, Jun Kamatani
  • Patent number: 10808059
    Abstract: To determine and detect 8-oxo-2?-deoxyguanosine in an aqueous sample solution with high sensitivity and specifically, provided is a polymer including a repetition structure represented by any one of the following general formulae 2 to 5, in which a group represented by any one of the following general formulae 6 to 11 is linked to the repetition structure represented by any one of the following general formulae 2 to 5 through a divalent linking group L.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: October 20, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yutaka Tani, Takeshi Sekiguchi, Keigo Mizusawa, Ryuji Higashi, Masaru Sugita, Isao Kawata
  • Patent number: 10761442
    Abstract: Provided are an electrophotographic photosensitive member including a support and a photosensitive layer above the support, in which a surface layer of the electrophotographic photosensitive member includes a polymerization product of a composition containing a specific hole transporting compound, and an electrophotographic apparatus and a process cartridge including the electrophotographic photosensitive member. Also provided is a method of producing the electrophotographic photosensitive member, including (i) forming a coating film of a coating solution for a surface layer which is a composition containing a specific hole transporting compound, and (ii) forming the surface layer of the electrophotographic photosensitive member by a polymerization reaction of the composition containing the specific hole transporting compound.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: September 1, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koichi Nakata, Haruki Mori, Shubun Kujirai, Shinji Takagi, Isao Kawata, Yuto Ito, Ryuji Higashi
  • 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
  • Patent number: 10670979
    Abstract: An electrophotographic photosensitive member has a surface layer that contains a polymer of a hole transport material having at least one monovalent polymerizable functional group.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: June 2, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koichi Nakata, Haruki Mori, Shinji Takagi, Koichi Suzuki, Ryuji Higashi, Isao Kawata, Hajime Muta, Yuto Ito, Masaki Nonaka
  • Publication number: 20190391504
    Abstract: Provided are an electrophotographic photosensitive member including a support and a photosensitive layer above the support, in which a surface layer of the electrophotographic photosensitive member includes a polymerization product of a composition containing a specific hole transporting compound, and an electrophotographic apparatus and a process cartridge including the electrophotographic photosensitive member. Also provided is a method of producing the electrophotographic photosensitive member, including (i) forming a coating film of a coating solution for a surface layer which is a composition containing a specific hole transporting compound, and (ii) forming the surface layer of the electrophotographic photosensitive member by a polymerization reaction of the composition containing the specific hole transporting compound.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 26, 2019
    Inventors: Koichi Nakata, Haruki Mori, Shubun Kujirai, Shinji Takagi, Isao Kawata, Yuto Ito, Ryuji Higashi
  • Publication number: 20190364191
    Abstract: Provided is a photoelectric conversion element including an anode, a photoelectric conversion layer that contains a first organic semiconductor, a second organic semiconductor, and a third organic semiconductor, and a cathode. As each of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor, a low-molecular weight organic semiconductor is used. The first organic semiconductor, the second organic semiconductor, and the third organic semiconductor have mass ratios that satisfy the following relationship: the first organic semiconductor?the second organic semiconductor?the third organic semiconductor. Further, when a total amount of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor is 100 mass %, a content of the second organic semiconductor is 6 mass % or more, and a content of the third organic semiconductor is 3 mass % or more.
    Type: Application
    Filed: July 26, 2019
    Publication date: November 28, 2019
    Inventors: Tetsuo Takahashi, Satoru Shiobara, Jun Kamatani, Naoki Yamada, Tomona Yamaguchi, Hiroki Ohrui, Hironobu Iwawaki, Masumi Itabashi, Yosuke Nishide, Hirokazu Miyashita, Norifumi Kajimoto, Moe Takahira, Isao Kawata, Yuto Ito
  • Patent number: 10401746
    Abstract: An electrophotographic photosensitive member includes a support member, a charge generating layer containing a phthalocyanine pigment as a charge generating material, a charge transport layer containing a charge transporting material in this order. The charge generating layer has a thickness of less than 200 nm, and the phthalocyanine pigment includes phthalocyanine crystalline particles having a particle size distribution and satisfies a requirement that the volume average of the products of ?i and ?i is 0.31 or more.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: September 3, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kaname Watariguchi, Shoma Hinata, Kazuko Araki, Tsutomu Nishida, Jumpei Kuno, Masataka Kawahara, Yuto Ito, Isao Kawata
  • 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: 20180355086
    Abstract: To determine and detect 8-oxo-2?-deoxyguanosine in an aqueous sample solution with high sensitivity and specifically, provided is a polymer including a repetition structure represented by any one of the following general formulae 2 to 5, in which a group represented by any one of the following general formulae 6 to 11 is linked to the repetition structure represented by any one of the following general formulae 2 to 5 through a divalent linking group L.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 13, 2018
    Inventors: Yutaka Tani, Takeshi Sekiguchi, Keigo Mizusawa, Ryuji Higashi, Masaru Sugita, Isao Kawata