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: 20170295787
    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: Application
    Filed: September 29, 2015
    Publication date: October 19, 2017
    Inventors: Takamasa TANABE, Yoshihiko NOKURA, Ryota MAEHATA, Kohei ORIMOTO, Yuji NAKAJIMA
  • Publication number: 20170166529
    Abstract: A 3-(alkylsulfonyl)pyridine-2-carboxylic acid or a salt thereof can be manufactured by comprising: a step of 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); a step of allowing the compound represented by formula (3-N) to react with hydrogen peroxide in the presence of a tungsten catalyst and an acid to give a compound represented by formula (6-N): (wherein R2 and X are as defined above); a step of reducing the compound represented by formula (6-N) in the presence of a base and a heterogeneous transition metal catalyst to give a compound represented by formula (8-N): (wherein R2 is as defined above); and a step of hydrolyzing the compound represented by formula (8-N) in the presen
    Type: Application
    Filed: June 22, 2015
    Publication date: June 15, 2017
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takahiro KIMURA, Ryota MAEHATA
  • Publication number: 20170129859
    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): (wherein R1 represents a C1-8 straight-chain alkyl group, and 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-S): (wherein R1, R2, and X are as defined above); 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: (wherein X and R2 are as defined above); 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: (w
    Type: Application
    Filed: June 22, 2015
    Publication date: May 11, 2017
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takahiro KIMURA, Ryota MAEHATA
  • Patent number: 9392791
    Abstract: Amide compounds and methods of using the amide compounds for pest control are provided.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: July 19, 2016
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Ryota Maehata, Hajime Mizuno, Chie Shimizu, Yoshihiko Nokura
  • Publication number: 20150336881
    Abstract: A fused heterocyclic compound represented by formula (1) has an excellent pest control effect. In the formula, R1, R2, R3, R4 and R5 may be the same or different, and each represents a C1-C6 chain hydrocarbon group which may have one or more atoms or groups selected from group X, etc.; R6 represents a C1-C6 chain hydrocarbon group which may have one or more atoms or groups selected from group W, etc.; R7, R8, R9, R10, and R11 may be the same or different, and each represents a C1-C6 chain hydrocarbon group which may have one or more atoms or groups selected from group X, etc.; Q represents an oxygen atom or a sulfur atom; and each of m and n represents 0, 1 or 2.
    Type: Application
    Filed: June 5, 2013
    Publication date: November 26, 2015
    Inventors: Ryota MAEHATA, Hajime MIZUNO, Chie SHIMIZU, Yoshihiko NOKURA
  • Publication number: 20150336895
    Abstract: A fused heterocyclic compound represented by formula (1) has an excellent pest control effect. (In the formula, R1 represents a C1-C6 chain hydrocarbon group which may have one or more atoms or groups that are selected from group X, or the like; R2, R3, R4 and R5 may be the same or different, and each represents a C1-C6 chain hydrocarbon group which may have one or more atoms or groups that are selected from group X, or the like; R6 represents a C1-C6 chain hydrocarbon group which may have one or more atoms or groups that are selected from group W, or the like; G1, G2, G3, G4 and G5 may be the same or different, and each represents a nitrogen atom or the like; Q represents an oxygen atom or a sulfur atom; and n represents 0, 1 or 2.
    Type: Application
    Filed: June 5, 2013
    Publication date: November 26, 2015
    Inventors: Ryota MAEHATA, Hajime MIZUNO, Chie SHIMIZU, Yoshihiko NOKURA
  • Patent number: 9185910
    Abstract: A fused heterocyclic compound represented by formula (I) has an excellent pest control effect. In the formula, R1 represents a C1-C6 chain hydrocarbon group or the like; R2, R3 and R4 may be the same or different, and each represents a C1-C6 chain hydrocarbon group or the like; R5 represents a C1-C6 chain hydrocarbon group or the like; G1, G2, G3, G4 and G5 may be the same or different, and each represents a nitrogen atom or the like; Q represents an oxygen atom or a sulfur atom; and n represents 0, 1 or 2.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: November 17, 2015
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Ryota Maehata, Hajime Mizuno, Chie Shimizu, Yoshihiko Nokura
  • Publication number: 20150189880
    Abstract: A fused heterocyclic compound represented by formula (I) has an excellent pest control effect. In the formula, R1 represents a C1-C6 chain hydrocarbon group or the like; R2, R3 and R4 may be the same or different, and each represents a C1-C6 chain hydrocarbon group or the like; R5 represents a C1-C6 chain hydrocarbon group or the like; G1, G2, G3, G4 and G5 may be the same or different, and each represents a nitrogen atom or the like; Q represents an oxygen atom or a sulfur atom; and n represents 0, 1 or 2.
    Type: Application
    Filed: July 29, 2013
    Publication date: July 9, 2015
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Ryota Maehata, Hajime Mizuno, Chie Shimizu, Yoshihiko Nokura