Patents by Inventor Ryota Maehata

Ryota Maehata 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: 20240008488
    Abstract: A compound of formula (I) or its N-oxide, where Q is Q1; ? represents the binding site to the rest of molecule; Z represents an oxygen atom; A3 represents CR4b; B1 represents CR1; B2 represents CR6b; B3 represents CR6c; B4 represents CR6d; R6 represents a C1-C6 chain hydrocarbon group; G1 represents a nitrogen atom or CR3a; G2 represents a nitrogen atom or CR3b; G3 represents a nitrogen atom or CR3c; G4 represents a nitrogen atom or CR3d; R1 represents a C1-C6 chain hydrocarbon group optionally substituted with one or more substituent(s) selected from the group consisting of a cyano group and a halogen atom; R2 represents a C1-C6 alkyl group; R3a, R3b, R3c, R3d, R4b, R6b, R6c, and R6d are identical to or different from each other, and each represent a C1-C6 alkyl group optionally substituted with one or more halogen atom(s); and n represents 0, 1, or 2.
    Type: Application
    Filed: September 29, 2021
    Publication date: January 11, 2024
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Koichiro DOTA, Takayuki SHIODA, Ryota MAEHATA, Yasumasa SAITO
  • Patent number: 11779018
    Abstract: The present invention provides a compound that has an excellent control effect on arthropod pests, and is represented by formula (I) [wherein Q represents a group represented by Q1, or the like, n is 0, 1, or 2, R2 represents a C1-C6 alkyl group which may optionally have one or more halogen atoms, or the like, Ya represents an oxygen atom, a sulfur atom, or NR3a, G1 represents a nitrogen atom or CR5a, G2 represents a nitrogen atom or CR5b, A2 represents a nitrogen atom or CR4a, A3 represents a nitrogen atom or CR4b, A4 represents a nitrogen atom or CR4c, and R3a, R4a, R4b, R4c, R5a, and R5b represent a C1-C6 chain hydrocarbon group or the like, and T represents a C1-C10 chain hydrocarbon group which may optionally have one or more halogen atoms, or the like].
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: October 10, 2023
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Ryota Maehata, Kohei Orimoto, Takamasa Tanabe, Yasumasa Saito
  • Publication number: 20230115523
    Abstract: A compound of Formula (I) where Q represents a group represented by Q2, . represents a site of binding with the rest of molecules, T1 represents a group represented by T1-1, Z represents an oxygen atom, A2 represents CR4a, B1 represents CR38a, B2 represents CR1, B3 represents a nitrogen atom, G1 represents a nitrogen atom or CR3a, G2 represents a nitrogen atom or CR3b, G3 represents a nitrogen atom or CR3c, G4 represents a nitrogen atom or CR3d, R1 represents a C1-C6 chain hydrocarbon group that is substituted with one or more substituents selected from the group consisting of a cyano group and a halogen atom, R2 represents a C1-C6 alkyl group, and R3a, R3b, R3c, R3d, R4a, and R6 are the same or different and represent a C1-C6 chain hydrocarbon group, R38a represents a C1-C3 chain hydrocarbon group or the like, and n represents 0, 1, or 2.
    Type: Application
    Filed: January 8, 2021
    Publication date: April 13, 2023
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Ryota MAEHATA, Takeshi TSURUDA, Takayuki SHIODA, Yasumasa SAITO
  • Patent number: 11490622
    Abstract: The present invention provides a compound substituted with an excellent control effect against a harmful arthropod, which is represented by formula (I) Het-Q??(I) wherein Q represents a group represented by Q1, etc., Het represents a group represented by Het1, etc., R2 represents a C1-C6 alkyl group, etc., G1 represents a nitrogen atom or CR3a, G2 represents a nitrogen atom or CR3b, G3 represents a nitrogen atom or CR3c, G4 represents a nitrogen atom or CR3d, R3a, R3b, R3c, and R3d are identical to or different from each other and represent a C1-C6 chain hydrocarbon group, etc., n represents 0, 1, or 2, T represents a C1-C10 chain hydrocarbon group substituted with one or more halogen atoms, etc., A2 represents a nitrogen atom or CR4a, A3 represents a nitrogen atom or CR4b, R4a and R4b are identical to or different from each other and represent a C1-C6 chain hydrocarbon group, W1 represents an oxygen atom, etc., and R6 represents a C1-C6 chain hydrocarbon group, etc.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: November 8, 2022
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kohei Orimoto, Yuji Nakajima, Risa Kono, Ryota Maehata, Masayuki Tashiro
  • Patent number: 11161843
    Abstract: Provided is a heterocyclic compound which exhibits an excellent controlling effect against harmful arthropods. In particular, provided is a heterocyclic compound represented by formula (I), wherein Q denotes a group represented by Q1 or the like, A2 denotes a nitrogen atom or CR4a, A3 denotes a nitrogen atom or CR4b, A4 denotes a nitrogen atom or CR4c, and T denotes a C1-C10 linear hydrocarbon group having one or more halogen atoms, or the like. Also provided is a composition that contains this compound and one or more components selected from the group consisting of group (a), group (b), group (c), group (d) and group (e) as listed in the description.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: November 2, 2021
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Ryota Maehata, Masaru Shimomura
  • Patent number: 11149027
    Abstract: Provided is a compound of formula (I) or an N-oxide thereof, wherein Het1 represents Het1-1, Het1-2, Het1-3, Het1-4 or Het1-5, and the remaining variable groups are as defined in the specification. The compound of formula (I) or N-oxide compound thereof has an excellent control effect against arthropod pests.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: October 19, 2021
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kohei Orimoto, Takamasa Tanabe, Ryota Maehata, Yuji Nakajima
  • Publication number: 20210084903
    Abstract: The present invention provides a compound substituted with an excellent control effect against a harmful arthropod, which is represented by formula (I) Het-Q??(I) wherein Q represents a group represented by Q1, etc., Het represents a group represented by Het1, etc., R2 represents a C1-C6 alkyl group, etc., G1 represents a nitrogen atom or CR3a, G2 represents a nitrogen atom or CR3b, G3 represents a nitrogen atom or CR3c, G4 represents a nitrogen atom or CR3d, R3a, R3b, R3c, and R3d are identical to or different from each other and represent a C1-C6 chain hydrocarbon group, etc., n represents 0, 1, or 2, T represents a C1-C10 chain hydrocarbon group substituted with one or more halogen atoms, etc., A2 represents a nitrogen atom or CR4a, A3 represents a nitrogen atom or CR4b, R4a and R4b are identical to or different from each other and represent a C1-C6 chain hydrocarbon group, W1 represents an oxygen atom, etc., and R6 represents a C1-C6 chain hydrocarbon group, etc.
    Type: Application
    Filed: December 21, 2018
    Publication date: March 25, 2021
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kohei ORIMOTO, Yuji NAKAJIMA, Risa KONO, Ryota MAEHATA, Masayuki TASHIRO
  • Publication number: 20210030003
    Abstract: The present invention provides a compound that has an excellent control effect on arthropod pests, and is represented by formula (I) [wherein Q represents a group represented by Q1, or the like, n is 0, 1, or 2, R2 represents a C1-C6 alkyl group which may optionally have one or more halogen atoms, or the like, Ya represents an oxygen atom, a sulfur atom, or NR3a, G1 represents a nitrogen atom or CR5a, G2 represents a nitrogen atom or CR5b, A2 represents a nitrogen atom or CR4a, A3 represents a nitrogen atom or CR4b, A4 represents a nitrogen atom or CR4c, and R3a, R4a, R4b, R4c, R5a, and R5b represent a C1-C6 chain hydrocarbon group or the like, and T represents a C1-C10 chain hydrocarbon group which may optionally have one or more halogen atoms, or the like].
    Type: Application
    Filed: March 29, 2019
    Publication date: February 4, 2021
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Ryota MAEHATA, Kohei ORIMOTO, Takamasa TANABE, Yasumasa SAITO
  • Publication number: 20200010445
    Abstract: The present invention provides a method for producing a compound represented by formula (4), which is useful as, for example, an agrochemical or an intermediate for agrochemical production, the method including the step of reacting a compound represented by formula (2) with an organic oxidant. [In the formulae, Q represents a pyridyl group, etc.; R1 represents a C1-6 alkyl group optionally having one or more halogen atoms; R2 represents, for example, a C1-6 alkyl group optionally having one or more halogen atoms; R3, R4, and R5 each represent a hydrogen atom, etc.; and n is 0, etc.
    Type: Application
    Filed: April 18, 2018
    Publication date: January 9, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takahiro KIMURA, Yasuhiro KOJIMA, Yumi HAYASHI, Ryota MAEHATA
  • Publication number: 20190389858
    Abstract: Provided is a heterocyclic compound which exhibits an excellent controlling effect against harmful arthropods. In particular, provided is a heterocyclic compound represented by formula (I), wherein Q denotes a group represented by Q1 or the like, A2 denotes a nitrogen atom or CR4a, A3 denotes a nitrogen atom or CR4b, A4 denotes a nitrogen atom or CR4c, and T denotes a C1-C10 linear hydrocarbon group having one or more halogen atoms, or the like. Also provided is a composition that contains this compound and one or more components selected from the group consisting of group (a), group (b), group (c), group (d) and group (e) as listed in the description.
    Type: Application
    Filed: January 23, 2018
    Publication date: December 26, 2019
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Ryota MAEHATA, Masaru SHIMOMURA
  • Publication number: 20190106411
    Abstract: Provided is a compound of formula (I) or an N-oxide thereof, wherein Het1 represents Het1-1, Het1-2, Het1-3, Het1-4 or Het1-5, and the remaining variable groups are as defined in the specification. The compound of formula (I) or N-oxide compound thereof has an excellent control effect against arthropod pests.
    Type: Application
    Filed: March 17, 2017
    Publication date: April 11, 2019
    Inventors: Kohei ORIMOTO, Takamasa TANABE, Ryota MAEHATA, Yuji NAKAJIMA
  • Patent number: 10173997
    Abstract: Provided is a bipyridine compound that exhibits an excellent controlling effect against noxious arthropods. In particular, provided is a bipyridine compound of formula (I) or an N-oxide thereof in which the variable groups are as defined in the specification. Also provided are compositions containing the biypridine compound or an N-oxide thereof, and methods of using such compounds and compositions to control noxious arthropods.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: January 8, 2019
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takamasa Tanabe, Yoshihiko Nokura, Ryota Maehata, Yuji Nakajima, Kohei Orimoto
  • Patent number: 10172356
    Abstract: A bipyridine compound having an excellent controlling effect against noxious arthropods is provided. In particular, a bipyridine compound of formula (I) or an N-oxide thereof is provided in which the variable groups are as described in the specification. Also provided are compositions containing the bipyridine compound or an N-oxide thereof, and methods of using such compounds and compositions to control noxious arthropods.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: January 8, 2019
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takamasa Tanabe, Yoshihiko Nokura, Ryota Maehata, Kohei Orimoto, Yuji Nakajima
  • Publication number: 20180310559
    Abstract: A bipyridine compound having an excellent controlling effect against noxious arthropods is provided. In particular, a bipyridine compound of formula (I) or an N-oxide thereof is provided in which the variable groups are as described in the specification. Also provided are compositions containing the biypridine compound or an N-oxide thereof, and methods of using such compounds and compositions to control noxious arthropods.
    Type: Application
    Filed: January 29, 2016
    Publication date: November 1, 2018
    Inventors: Takamasa TANABE, Yoshihiko NOKURA, Ryota MAEHATA, Kohei ORIMOTO, Yuji NAKAJIMA
  • Patent number: 9924719
    Abstract: A pyridazine compound represented by formula (1): wherein A represents a nitrogen atom or a CR6, R1 represents a C2-C10 alkyl group having one or more halogen atoms, etc., R2 and R3 represent independently of each other a hydrogen atom, etc., R4 represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, R5 represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, etc., R6 represents a hydrogen atom, etc., n represents 0, 1, or 2, and p represents 0, 1, or 2, has an excellent efficacy for controlling harmful arthropods.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: March 27, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takamasa Tanabe, Yoshihiko Nokura, Ryota Maehata, Kohei Orimoto, Yuji Nakajima
  • Publication number: 20180009778
    Abstract: Provided is a bipyridine compound that exhibits an excellent controlling effect against noxious arthropods. In particular, provided is a bipyridine compound of formula (I) or an N-oxide thereof in which the variable groups are as defined in the specification. Also provided are compositions containing the biypridine compound or an N-oxide thereof, and methods of using such compounds and compositions to control noxious arthropods.
    Type: Application
    Filed: January 29, 2016
    Publication date: January 11, 2018
    Inventors: Takamasa TANABE, Yoshihiko NOKURA, Ryota MAEHATA, Yuji NAKAJIMA, Kohei ORIMOTO
  • Patent number: 9850209
    Abstract: A 3-(alkylsulfonyl)pyridine-2-carboxylic acid or a salt thereof can be manufactured by comprising: allowing a compound represented by formula (1-N): wherein X represents a halogen atom, to react with a compound represented by formula (2): R2SM2??(2) wherein R2 represents a C1-8 straight-chain alkyl group, and M2 represents a hydrogen atom or an alkali metal, to give a compound represented by formula (3-N): wherein R2 and X are as defined above; allowing the compound (3-N) to react with hydrogen peroxide in the presence of a tungsten catalyst and an acid; reducing the product in the presence of a base and a heterogeneous transition metal catalyst; and hydrolyzing the product in the presence of a base.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: December 26, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takahiro Kimura, Ryota Maehata
  • Patent number: 9815786
    Abstract: A compound represented by formula (7): or a salt thereof can be manufactured by the following steps: a step of allowing a compound represented by formula (1-S): to react with a compound represented by formula (2): R2SM2??(2) to give a compound represented by formula (3-S): a step of allowing the compound represented by formula (3-S) to react with hydrogen peroxide in the presence of a tungsten catalyst and an acid to give a compound represented by formula (6-S) or a salt thereof: and a step of reducing the compound represented by formula (6-S) or salt thereof in the presence of a base and a heterogeneous transition metal catalyst to give a compound represented by formula (7) or a salt thereof, wherein X, R1, R2, and M2 are defined in the specification.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 14, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takahiro Kimura, Ryota Maehata
  • Patent number: 9802930
    Abstract: A pyrimidinone compound represented by formula (1): [wherein: A1 represents a nitrogen atom or a CR4; A2 represents a nitrogen atom and A3 represents a CR3b, or A2 represents a CR3a and A3 represents a nitrogen atom; Q represents an oxygen atom or a sulfur atom; G represents a C2-C10 chain hydrocarbon group having one or more halogen atoms, etc.; R1 represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms; R2 represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, etc.; R4 represents a hydrogen atom, etc.; R3, R3a, and R3b represent independently of each other a hydrogen atom, etc.; n represents 0, 1, or 2; and p represents 0, 1, 2, or 3] has an excellent efficacy for controlling harmful arthropods.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: October 31, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takamasa Tanabe, Yoshihiko Nokura, Ryota Maehata, Kohei Orimoto, Yuji Nakajima
  • Publication number: 20170305896
    Abstract: A pyrimidinone compound represented by formula (1): wherein: A1 represents a nitrogen atom or a CR4; A2 represents a nitrogen atom and A3 represents a CR3b, or A2 represents a CR3a and A3 represents a nitrogen atom; Q represents an oxygen atom or a sulfur atom; G represents a C2-C10 chain hydrocarbon group having one or more halogen atoms, etc.; R1 represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms; R2 represents a C1-C6 chain hydrocarbon group optionally having one or more halogen atoms, etc.; R4 represents a hydrogen atom, etc.; R3, R3a, and R3b represent independently of each other a hydrogen atom, etc.; n represents 0, 1, or 2; and p represents 0, 1, 2, or 3 has an excellent efficacy for controlling harmful arthropods.
    Type: Application
    Filed: September 18, 2015
    Publication date: October 26, 2017
    Inventors: Takamasa TANABE, Yoshihiko NOKURA, Ryota MAEHATA, Kohei ORIMOTO, Yuji NAKAJIMA