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: 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
  • Publication number: 20140154610
    Abstract: An aromatic copolymer comprises a hydrophilic segment (A) and a hydrophobic segment (B), wherein the hydrophilic segment (A) comprises a structural unit (1) having a proton conductive group, and the hydrophobic segment (B) comprises at least one structural unit selected from the group consisting of a structural unit (2) and a structural unit (3), wherein the structural unit (2) is a divalent structural unit having an aromatic ring and no proton conductive groups and having two bonding sites at the para-position of one ring included in the aromatic ring, and the structural unit (3) is a divalent structural unit having a benzene ring and is a structural unit different from the structural unit (2), the hydrophobic segment (B) in its entirety contained in the aromatic copolymer including both the structural unit (2) and the structural unit (3).
    Type: Application
    Filed: July 27, 2012
    Publication date: June 5, 2014
    Applicant: JSR CORPORATION
    Inventors: Takuya Murakami, Toshiaki Kadota, Yoshitaka Yamakawa
  • Patent number: 8729219
    Abstract: A polyarylene block copolymer can provide a solid polymer electrolyte and proton conductive membrane having high proton conductivity, high dimensional stability, and high mechanical strength. The polyarylene block copolymer also has reduced swelling in hot water and reduced shrinkage in drying. The polyarylene block copolymer includes a polymer segment having a sulfonic acid group, and a polymer segment having substantially no sulfonic acid group.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: May 20, 2014
    Assignee: JSR Corporation
    Inventors: Yoshitaka Yamakawa, Toshiaki Kadota, Takuya Murakami, Yuuji Tsunoda
  • Publication number: 20130085236
    Abstract: A polyarylene block copolymer can provide a solid polymer electrolyte and proton conductive membrane having high proton conductivity, high dimensional stability, and high mechanical strength. The polyarylene block copolymer also has reduced swelling in hot water and reduced shrinkage in drying. The polyarylene block copolymer includes a polymer segment having a sulfonic acid group, and a polymer segment having substantially no sulfonic acid group.
    Type: Application
    Filed: June 8, 2011
    Publication date: April 4, 2013
    Applicant: JSR CORPORATION
    Inventors: Yoshitaka Yamakawa, Toshiaki Kadota, Takuya Murakami, Yuuji Tsunoda
  • Patent number: 8349994
    Abstract: Disclosed is an electrode electrolyte for solid polymer fuel cells, which uses a polymer electrolyte containing a polyarylene copolymer containing a nitrogen-containing aromatic ring having a substituent represented by —SO3H, —(O(CH2)hSO3H or —O(CF2)hSO3H (wherein h represents an integer of 1-12). By having such a constitution, the electrode electrolyte for solid polymer fuel cells can be produced at a low cost, while being excellent in proton conductivity, dimensional stability, hydrothermal resistance and mechanical strength. In addition, this electrode electrolyte for solid polymer fuel cells enables to recover a catalyst metal.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: January 8, 2013
    Assignees: JSR Corporation, Honda Motor Co., Ltd.
    Inventors: Toshiaki Kadota, Yoshitaka Yamakawa, Fusao Nakagawa, Nagayuki Kanaoka, Takaki Nakagawa
  • Patent number: 8309678
    Abstract: Provided is a solid polymer electrolyte having increased heat resistance and high proton conductivity and a proton conductive membrane composed of the electrolyte. Also provided is a copolymer having a sulfonic acid group.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: November 13, 2012
    Assignee: JSR Corporation
    Inventors: Toshiaki Kadota, Yoshitaka Yamakawa
  • Publication number: 20120052412
    Abstract: A polyarylene copolymer having a sulfonic acid group which has high proton conductivity and reduced swelling in hot water and reduced shrinkage in drying; a solid polymer electrolyte and a proton conductive membrane comprising the copolymer; and a membrane-electrode assembly using these. The polyarylene block copolymer comprises a polymer segment (A) having a sulfonic acid group, and a polymer segment (B) having substantially no sulfonic acid group, the polymer segment (B) having substantially no sulfonic acid group comprising a structural unit represented by the following formula (1).
    Type: Application
    Filed: August 19, 2011
    Publication date: March 1, 2012
    Applicants: HONDA MOTOR CO., LTD., JSR CORPORATION
    Inventors: Yoshitaka YAMAKAWA, Toshiaki KADOTA, Takuya MURAKAMI, Yuuji TSUNODA, Masaru IGUCHI, Kaoru FUKUDA
  • Publication number: 20100167161
    Abstract: Disclosed is an electrode electrolyte for solid polymer fuel cells, which uses a polymer electrolyte containing a polyarylene copolymer containing a nitrogen-containing aromatic ring having a substituent represented by —SO3H, —(O(CH2)hSO3H or —O(CF2)hSO3H (wherein h represents an integer of 1-12). By having such a constitution, the electrode electrolyte for solid polymer fuel cells can be produced at a low cost, while being excellent in proton conductivity, dimensional stability, hydrothermal resistance and mechanical strength. In addition, this electrode electrolyte for solid polymer fuel cells enables to recover a catalyst metal.
    Type: Application
    Filed: May 16, 2008
    Publication date: July 1, 2010
    Inventors: Toshiaki Kadota, Yoshitaka Yamakawa, Fusao Nakagawa, Nagayuki Kanaoka, Takaki Nakagawa
  • Publication number: 20100152308
    Abstract: Provided is a solid polymer electrolyte having increased heat resistance and high proton conductivity and a proton conductive membrane composed of the electrolyte. Also provided is a copolymer having a sulfonic acid group.
    Type: Application
    Filed: May 16, 2008
    Publication date: June 17, 2010
    Applicant: JSR Corporation
    Inventors: Toshiaki Kadota, Yoshitaka Yamakawa
  • Patent number: 7651802
    Abstract: Disclosed is a polymer electrolyte having a protonic acid group that is excellent in thermal stability and dimensional stability. The polymer electrolyte includes copolymers having a sulfonic acid group which has a structure represented by the following formula: wherein X is a divalent electron-withdrawing group; Y is an oxygen or a sulfur; Z and Q are each a direct bond, —O—, —S—, —CO—, —SO2—, —[C(R?)2]g— (g: integer of from 1 to 8), etc.; R, R? and R1 to R16 are each a hydrogen, a fluorine, an alkyl, a fluorine-substituted alkyl, an aryl or a nitrile; m, n, p, q, r, s, t and u are each an integer of from 0 to 4 (with the proviso that p+q?1); and A is a group represented by Formula (5a) or (5b) below: wherein W is a divalent electron-withdrawing group; S is a protonic acid group; i is an integer of from 1 to 5; and j is an integer of from 1 to 7.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: January 26, 2010
    Assignees: JSR Corporation, Honda Motor Co., Ltd.
    Inventors: Yoshitaka Yamakawa, Toshihiro Ohtsuki, Kohei Goto, Toshiaki Kadota, Teruhiko Umehara, Nagayuki Kanaoka, Masaru Iguchi, Hiroshi Sohma
  • Patent number: 7163988
    Abstract: Disclosed is an aromatic sulfonic acid ester derivative represented by the formula (1); in the formula, X is an atom or a group selected from a halogen atom excluding fluorine, —OSO3CH3 and —OSO3CF3, A is a divalent electron attractive group, B is a divalent electron donating group or a direct bonding, Ra is a hydrocarbon group of 1 to 20 carbon atoms, Ar is an aromatic group having a substituent of —SO3Rb (wherein Rb is a hydrocarbon group of 1 to 20 carbon atoms), m is an integer of 0 to 10, n is an integer of 0 to 10 and k is an integer of 1 to 4. Also disclosed is a process for producing a polyarylene having a sulfonic acid group, which process comprises the steps of coupling polymerization of an aromatic compound containing the derivative of the formula (1), to prepare a polyarylene and hydrolysis of the polyarylene, and which process has high safety and is easily capable of controlling the amount of sulfonoc acid group introduced into a polymer and the introducing position thereof.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: January 16, 2007
    Assignee: JSR Corporation
    Inventors: Igor Rozhanskii, Masayuki Takahashi, Kohei Goto, Yousuke Konno, Toshihiro Ohtsuki, Yoshitaka Yamakawa, Toshiaki Kadota