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).
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Patent number: 11582860Abstract: 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: GrantFiled: September 10, 2018Date of Patent: February 14, 2023Assignee: JSR CORPORATIONInventors: Isao Nishimura, Nobuyuki Miyaki, Toshiaki Kadota, Shintarou Fujitomi, Tomotaka Shinoda
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Patent number: 11516906Abstract: 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: GrantFiled: September 10, 2018Date of Patent: November 29, 2022Assignee: JSR CORPORATIONInventors: Isao Nishimura, Nobuyuki Miyaki, Toshiaki Kadota, Shintarou Fujitomi, Tomotaka Shinoda
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Patent number: 11505651Abstract: 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: GrantFiled: October 19, 2018Date of Patent: November 22, 2022Assignee: JSR CorporationInventors: Ryouyuu Hifumi, Toshiaki Kadota, Nobuyuki Miyaki, Shintarou Fujitomi, Yasutaka Yoshida, Ryouji Tatara
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Publication number: 20220235179Abstract: 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: ApplicationFiled: April 5, 2022Publication date: July 28, 2022Applicant: JSR CORPORATIONInventors: Ryouyuu HIFUMI, Toshiaki KADOTA, Nobuyuki MIYAKI, Shintarou FUJITOMI, Yasutaka YOSHIDA, Ryouji TATARA
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Publication number: 20220043345Abstract: 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: ApplicationFiled: October 21, 2021Publication date: February 10, 2022Applicant: JSR CORPORATIONInventors: Ryouta TSUYUKI, Kimiyuki KANNO, Toshiaki KADOTA, Ryoji TATARA
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Patent number: 11134568Abstract: 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: GrantFiled: September 10, 2018Date of Patent: September 28, 2021Assignee: JSR CORPORATIONInventors: Isao Nishimura, Nobuyuki Miyaki, Toshiaki Kadota, Shintarou Fujitomi, Tomotaka Shinoda
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Publication number: 20210286262Abstract: 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: ApplicationFiled: May 17, 2019Publication date: September 16, 2021Applicant: JSR CORPORATIONInventors: Torahiko YAMAGUCHI, Kimiyuki KANNO, Ryoji TATARA, Toshiaki KADOTA, Ryoyu HIFUMI, Shoma ANABUKI
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Publication number: 20200354512Abstract: 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: ApplicationFiled: July 29, 2020Publication date: November 12, 2020Applicant: JSR CORPORATIONInventors: SHOUMA ANABUKI, Ryouyuu HIFUMI, Toshiaki KADOTA, Ryouji TATARA, Nobuyuki MIYAKI
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Publication number: 20200344870Abstract: 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: ApplicationFiled: September 10, 2018Publication date: October 29, 2020Applicant: JSR CORPORATIONInventors: Isao NISHIMURA, Nobuyuki MIYAKI, Toshiaki KADOTA, Shintarou FUJITOMI, Tomotaka SHINODA
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Publication number: 20200281076Abstract: 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: ApplicationFiled: September 10, 2018Publication date: September 3, 2020Applicant: JSR CORPORATIONInventors: Isao NISHIMURA, Nobuyuki MIYAKI, Toshiaki KADOTA, Shintarou FUJITOMI, Tomotaka SHINODA
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Publication number: 20190169362Abstract: 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: ApplicationFiled: January 28, 2019Publication date: June 6, 2019Applicant: JSR CORPORATIONInventors: Shouma ANABUKI, Ryouyuu HIFUMI, Toshiaki KADOTA, Ryouji TATARA, Nobuyuki MIYAKI
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Patent number: 10266650Abstract: 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: GrantFiled: September 8, 2017Date of Patent: April 23, 2019Assignee: JSR CORPORATIONInventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
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Patent number: 10227449Abstract: 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: GrantFiled: September 8, 2017Date of Patent: March 12, 2019Assignee: JSR CORPORATIONInventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
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Publication number: 20190055357Abstract: 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: ApplicationFiled: October 19, 2018Publication date: February 21, 2019Applicant: JSR CorporationInventors: Ryouyuu HIFUMI, Toshiaki Kadota, Nobuyuki Miyaki, Shintarou Fujitomi, Yasutaka Yoshida, Ryouji Tatara
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Publication number: 20180179335Abstract: 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: ApplicationFiled: September 8, 2017Publication date: June 28, 2018Applicant: JSR CORPORATIONInventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
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Publication number: 20180009938Abstract: 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: ApplicationFiled: September 20, 2017Publication date: January 11, 2018Applicant: JSR CORPORATIONInventors: Shoma ANABUKI, Ryoyu HIFUMI, Ryoji TATARA, Toshiaki KADOTA, Nobuyuki MIYAKI, Kazuki HATASE
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Publication number: 20170369649Abstract: 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: ApplicationFiled: September 8, 2017Publication date: December 28, 2017Applicant: JSR CORPORATIONInventors: Yuuya Nawate, Yuki Kitamura, Ryoji Tatara, Teruhiko Umehara, Nobuyuki Miyaki, Toshiaki Kadota
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Publication number: 20140154610Abstract: 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: ApplicationFiled: July 27, 2012Publication date: June 5, 2014Applicant: JSR CORPORATIONInventors: Takuya Murakami, Toshiaki Kadota, Yoshitaka Yamakawa
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Patent number: 8729219Abstract: 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: GrantFiled: June 8, 2011Date of Patent: May 20, 2014Assignee: JSR CorporationInventors: Yoshitaka Yamakawa, Toshiaki Kadota, Takuya Murakami, Yuuji Tsunoda
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Publication number: 20130085236Abstract: 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: ApplicationFiled: June 8, 2011Publication date: April 4, 2013Applicant: JSR CORPORATIONInventors: Yoshitaka Yamakawa, Toshiaki Kadota, Takuya Murakami, Yuuji Tsunoda