Patents by Inventor Toshiaki Kadota

Toshiaki Kadota 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: 20250122338
    Abstract: Provided is a polymer having repeating units composed of only repeating units represented by the following Formula (1). —N(R?)—R—N(R?)— is a structure derived from a dimer diamine which is unsubstituted or substituted with a substituent, and R?, R1, and R2 are each independently a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms which is unsubstituted or substituted with a substituent, or a heterocyclic aromatic group having 3 to 20 carbon atoms which is unsubstituted or substituted with a substituent.
    Type: Application
    Filed: January 30, 2023
    Publication date: April 17, 2025
    Applicants: JSR CORPORATION, NATIONAL UNIVERSITY CORPORATION, IWATE UNIVERSITY
    Inventors: Yoshiyuki OISHI, Tadashi TSUKAMOTO, Toshiaki KADOTA, Shunsuke IIZUKA, Koichi OKAMOTO
  • Publication number: 20250122404
    Abstract: A composition includes a polymer containing a repeating unit represented by Formula (1). —N(R?)—R3—N(R?)— is a structure derived from a dimer diamine that is unsubstituted or substituted by a substituent, R?, R1, and R2 each are independently a hydrogen atom, a halogen atom, a hydrocarbon group that is unsubstituted or substituted by a substituent and has 1 to 20 carbon atoms, a heterocyclic aliphatic group that is unsubstituted or substituted by a substituent and has 3 to 20 carbon atoms, or a heterocyclic aromatic group that is unsubstituted or substituted by a substituent and has 3 to 20 carbon atoms, and —NR1R2 may be a nitrogen-containing heterocyclic group which has 5 to 20 ring-constituting atoms and in which R1 and R2 are bonded to each other.
    Type: Application
    Filed: January 30, 2023
    Publication date: April 17, 2025
    Applicant: JSR CORPORATION
    Inventors: Toshiaki KADOTA, Shunsuke IIZUKA, Koichi OKAMOTO, Kenta NISHINO
  • Patent number: 12043702
    Abstract: A novel polymer having high glass transition temperature and an excellent balance between heat resistance, high refractive index and mechanical properties, and a composition and molded article containing the polymer are provided. The polymer according to the invention has a first structural unit represented by at least one of formulae (1-1), (1-2) and (1-3) below and a second structural unit having either a secondary amino structure or a tertiary amino structure at two or more terminals.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: July 23, 2024
    Assignee: JSR CORPORATION
    Inventors: Ryouyuu Hifumi, Toshiaki Kadota, Nobuyuki Miyaki, Shintarou Fujitomi, Yasutaka Yoshida, Ryouji Tatara
  • Patent number: 11582860
    Abstract: The circuit board according to the present invention includes a wiring portion and a non-wiring portion, the wiring portion having a metal layer and a resin layer, the non-wiring portion having a resin layer, the resin layer at a frequency 10 GHZ having a relative permittivity of from 2 to 3 at 23° C., and the circuit hoard satisfying a relationship: (A?B)/B?0.1 wherein A is the maximum value of the thickness in the wiring portion (?m) and B is the minimum value of the thickness in the non-wiring portion (?m).
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: February 14, 2023
    Assignee: JSR CORPORATION
    Inventors: Isao Nishimura, Nobuyuki Miyaki, Toshiaki Kadota, Shintarou Fujitomi, Tomotaka Shinoda
  • Patent number: 11516906
    Abstract: The circuit board according to the present invention includes a wiring portion and a non-wiring portion, the wiring portion having a metal layer and a resin layer, the non-wiring portion having a resin layer, the resin layer at a frequency 10 GHZ having a relative permittivity of from 2 to 3 at 23° C., and the circuit hoard satisfying a relationship: (A?B)/B?0.1 wherein A is the maximum value of the thickness in the wiring portion (?m) and B is the minimum value of the thickness in the non-wiring portion (?m).
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: November 29, 2022
    Assignee: JSR CORPORATION
    Inventors: Isao Nishimura, Nobuyuki Miyaki, Toshiaki Kadota, Shintarou Fujitomi, Tomotaka Shinoda
  • Patent number: 11505651
    Abstract: A novel polymer having high glass transition temperature and an excellent balance between heat resistance, high refractive index and mechanical properties, and a composition and molded article containing the polymer are provided. The polymer according to the invention has a first structural unit represented by at least one of formulae (1-1), (1-2) and (1-3) below and a second structural unit having either a secondary amino structure or a tertiary amino structure at two or more terminals.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: November 22, 2022
    Assignee: JSR Corporation
    Inventors: Ryouyuu Hifumi, Toshiaki Kadota, Nobuyuki Miyaki, Shintarou Fujitomi, Yasutaka Yoshida, Ryouji Tatara
  • Publication number: 20220235179
    Abstract: A novel polymer having high glass transition temperature and an excellent balance between heat resistance, high refractive index and mechanical properties, and a composition and molded article containing the polymer are provided. The polymer according to the invention has a first structural unit represented by at least one of formulae (1-1), (1-2) and (1-3) below and a second structural unit having either a secondary amino structure or a tertiary amino structure at two or more terminals.
    Type: Application
    Filed: April 5, 2022
    Publication date: July 28, 2022
    Applicant: JSR CORPORATION
    Inventors: Ryouyuu HIFUMI, Toshiaki KADOTA, Nobuyuki MIYAKI, Shintarou FUJITOMI, Yasutaka YOSHIDA, Ryouji TATARA
  • Publication number: 20220043345
    Abstract: An object of the present invention is to provide a photosensitive resin composition that can form an insulating film having low dielectric constant and low dielectric loss tangent and undergoing small changes in elongation properties in response to changes in environmental temperature. The photosensitive resin composition of the present invention contains: a polymer (A) having a structural unit (a1) represented by Formula (a1); a crosslinking agent (B); and a photocation generator (C). [R1 is an unsubstituted or substituted nitrogen-containing heteroaromatic ring or an unsubstituted or substituted aromatic hydrocarbon ring; R2 and R3 are each independently an unsubstituted or substituted aromatic hydrocarbon ring; R4 is an unsubstituted or substituted alkyl group having 2 to 20 carbon atoms; R5 is an unsubstituted or substituted alkyl group having 1 to 20 carbon atoms; and X's are each independently an oxygen atom, a sulfur atom, an ester bond, an amide bond, or —SO2—.
    Type: Application
    Filed: October 21, 2021
    Publication date: February 10, 2022
    Applicant: JSR CORPORATION
    Inventors: Ryouta TSUYUKI, Kimiyuki KANNO, Toshiaki KADOTA, Ryoji TATARA
  • Patent number: 11134568
    Abstract: Provided is a high-frequency circuit laminate that can reduce the transmission loss of electrical signals in high-frequency circuits and produce circuit boards with excellent smoothness. The high-frequency circuit laminate according to the present invention includes a metal layer and a resin layer which are laminated in contact with each other, the resin layer having an elastic modulus from 0.1 to 3 GPa, and the resin layer having an dielectric loss tangent from 0.001 to 0.01 and a relative permittivity from 2 to 3 at a frequency of 10 GHz at 23° C.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: September 28, 2021
    Assignee: JSR CORPORATION
    Inventors: Isao Nishimura, Nobuyuki Miyaki, Toshiaki Kadota, Shintarou Fujitomi, Tomotaka Shinoda
  • Publication number: 20210286262
    Abstract: A photosensitive resin composition contains: a polymer (A) having a terminal group represented by Formula (a1) and a repeating structural unit represented by Formula (a2); a crosslinking agent (B); and a photocation generator (C). Y represents a reactive group that reacts with the crosslinking agent (B) by action of a cation generated from the photocation generator (C) upon light irradiation; each X independently represents an oxygen atom, a sulfur atom, an ester bond, an amide bond, or —SO2—; R1 represents a divalent hydrocarbon group or a divalent group in which a functional group other than the reactive group and heterocycles is introduced into the divalent hydrocarbon group; and R2 represents a divalent hydrocarbon group, a divalent group in which a functional group other than the reactive group and heterocycles is introduced into the divalent hydrocarbon group, or a heterocycle-containing group that does not have the reactive group.
    Type: Application
    Filed: May 17, 2019
    Publication date: September 16, 2021
    Applicant: JSR CORPORATION
    Inventors: Torahiko YAMAGUCHI, Kimiyuki KANNO, Ryoji TATARA, Toshiaki KADOTA, Ryoyu HIFUMI, Shoma ANABUKI
  • Publication number: 20200354512
    Abstract: A polymer, includes a first structural unit represented by formula (1), a second structural unit represented by formula (2-1), formula (2-2), or both, and a third structural unit represented by formula (3-1), formula (3-2), or both. The polymer preferably has a weight-average molecular weight in terms of polystyrene of 500 or more and 400,000 or less. A composition includes the polymer and an organic solvent. A molded body includes the polymer.
    Type: Application
    Filed: July 29, 2020
    Publication date: November 12, 2020
    Applicant: JSR CORPORATION
    Inventors: SHOUMA ANABUKI, Ryouyuu HIFUMI, Toshiaki KADOTA, Ryouji TATARA, Nobuyuki MIYAKI
  • Publication number: 20200344870
    Abstract: To provide a circuit board that has excellent smoothness and capable of reducing a transmission loss of a high-frequency electrical signal. The circuit board according to the present invention includes a wiring portion and a non-wiring portion, the wiring portion having a metal layer and a resin layer, the non-wiring portion having a resin layer, the resin layer at a frequency 10 GHz having a relative permittivity of from 2 to 3 at 23° C., and the circuit board satisfying a relationship: (A?B)/B?0.1 wherein A is the maximum value of the thickness in the wiring portion (?m) and B is the minimum value of the thickness in the non-wiring portion (?m).
    Type: Application
    Filed: September 10, 2018
    Publication date: October 29, 2020
    Applicant: JSR CORPORATION
    Inventors: Isao NISHIMURA, Nobuyuki MIYAKI, Toshiaki KADOTA, Shintarou FUJITOMI, Tomotaka SHINODA
  • Publication number: 20200281076
    Abstract: Provided is a high-frequency circuit laminate that can reduce the transmission loss of electrical signals in high-frequency circuits and produce circuit boards with excellent smoothness. The high-frequency circuit laminate according to the present invention includes a metal layer and a resin layer which are laminated in contact with each other, the resin layer having an elastic modulus from 0.1 to 3 GPa, and the resin layer having an dielectric loss tangent from 0.001 to 0.01 and a relative permittivity from 2 to 3 at a frequency of 10 GHz at 23° C.
    Type: Application
    Filed: September 10, 2018
    Publication date: September 3, 2020
    Applicant: JSR CORPORATION
    Inventors: Isao NISHIMURA, Nobuyuki MIYAKI, Toshiaki KADOTA, Shintarou FUJITOMI, Tomotaka SHINODA
  • Publication number: 20190169362
    Abstract: A polymer, includes a first structural unit represented by formula (1), a second structural unit represented by formula (2-1), formula (2-2), or both, and a third structural unit represented by formula (3-1), formula (3-2), or both. The polymer preferably has a weight-average molecular weight in terms of polystyrene of 500 or more and 400,000 or less. A composition includes the polymer and an organic solvent. A molded body includes the polymer.
    Type: Application
    Filed: January 28, 2019
    Publication date: June 6, 2019
    Applicant: JSR CORPORATION
    Inventors: Shouma ANABUKI, Ryouyuu HIFUMI, Toshiaki KADOTA, Ryouji TATARA, Nobuyuki MIYAKI
  • Patent number: 10266650
    Abstract: A polymer includes a first structural unit represented by formula (1-1), (1-2) or (1-3) and a second structural unit represented by formula (2) or (3). In the formulae (1-1) to (1-3), (2) and (3), R1, R10 and R11 each represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; Zs each represent —O— or —S—; R4s each represent a methylene group or an alkylene group having 2 to 4 carbon atoms; and L represents a divalent group represented by formula (2-1). In the formula (2-1), Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: April 23, 2019
    Assignee: JSR CORPORATION
    Inventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
  • Patent number: 10227449
    Abstract: A polymer includes a first structural unit represented by formula (1-1), (1-2) or (1-3) and a second structural unit represented by formula (2) or (3). In the formulae (1-1) to (1-3), (2) and (3), R1, R10 and R11 each represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; Zs each represent —O— or —S—; R4s each represent a methylene group or an alkylene group having 2 to 4 carbon atoms; and L represents a divalent group represented by formula (2-1). In the formula (2-1), Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: March 12, 2019
    Assignee: JSR CORPORATION
    Inventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
  • Publication number: 20190055357
    Abstract: A novel polymer having high glass transition temperature and an excellent balance between heat resistance, high refractive index and mechanical properties, and a composition and molded article containing the polymer are provided. The polymer according to the invention has a first structural unit represented by at least one of formulae (1-1), (1-2) and (1-3) below and a second structural unit having either a secondary amino structure or a tertiary amino structure at two or more terminals.
    Type: Application
    Filed: October 19, 2018
    Publication date: February 21, 2019
    Applicant: JSR Corporation
    Inventors: Ryouyuu HIFUMI, Toshiaki Kadota, Nobuyuki Miyaki, Shintarou Fujitomi, Yasutaka Yoshida, Ryouji Tatara
  • Publication number: 20180179335
    Abstract: A polymer includes a first structural unit represented by formula (1-1), (1-2) or (1-3) and a second structural unit represented by formula (2) or (3). In the formulae (1-1) to (1-3), (2) and (3), R1, R10 and R11 each represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; Zs each represent —O— or —S—; R4s each represent a methylene group or an alkylene group having 2 to 4 carbon atoms; and L represents a divalent group represented by formula (2-1). In the formula (2-1), Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.
    Type: Application
    Filed: September 8, 2017
    Publication date: June 28, 2018
    Applicant: JSR CORPORATION
    Inventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
  • Publication number: 20180009938
    Abstract: The polymer includes a first structural unit represented by formula (1), a second structural unit represented by formula (2), and a third structural unit represented by formula (3). R1, R2, R10 and R11 each independently represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; R3A, R3B R4A and R4B each independently represent a methylene group or an alkylene group having 2 to 4 carbon atoms; ZA to ZD each independently represent —O— or —S—; and L represents a divalent group represented by formula (3-1) or (3-2), wherein Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.
    Type: Application
    Filed: September 20, 2017
    Publication date: January 11, 2018
    Applicant: JSR CORPORATION
    Inventors: Shoma ANABUKI, Ryoyu HIFUMI, Ryoji TATARA, Toshiaki KADOTA, Nobuyuki MIYAKI, Kazuki HATASE
  • Publication number: 20170369649
    Abstract: A polymer includes a first structural unit represented by formula (1-1), (1-2) or (1-3) and a second structural unit represented by formula (2) or (3). In the formulae (1-1) to (1-3), (2) and (3), R1, R10 and R11 each represent a halogen atom, a monovalent hydrocarbon group having 1 to 20 carbon atoms, a monovalent halogenated hydrocarbon group having 1 to 20 carbon atoms, a nitro group or a cyano group; Zs each represent —O— or —S—; R4s each represent a methylene group or an alkylene group having 2 to 4 carbon atoms; and L represents a divalent group represented by formula (2-1). In the formula (2-1), Ra represents a divalent alicyclic hydrocarbon group having 5 to 30 ring atoms or a divalent fluorinated alicyclic hydrocarbon group having 5 to 30 ring atoms.
    Type: Application
    Filed: September 8, 2017
    Publication date: December 28, 2017
    Applicant: JSR CORPORATION
    Inventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota