Patents by Inventor Toshiyuki Kiji

Toshiyuki Kiji 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).

  • Patent number: 9920004
    Abstract: Provided is a method for producing a compound represented by formula (2-b), which is useful as an intermediate for producing agricultural chemicals. The method includes a step for obtaining a compound represented by formula (2-a) by oxidizing the compound represented by formula (1) with hydrogen peroxide in the presence of sulfuric acid and/or a C1-6 alkanesulfonic acid that may be halogen-substituted and in the presence of a C2-12 aliphatic carboxylic acid and/or sulfolane. The method also includes a step for obtaining a compound represented by formula (2-b) by nitrating a compound represented by formula (2-a) in the presence of sulfuric acid and/or a C1-6 alkanesulfonic acid that may be halogen-substituted.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: March 20, 2018
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kazuya Ueki, Toshiyuki Kiji, Hiroaki Okamoto
  • Publication number: 20170137377
    Abstract: Provided is a method for producing a compound represented by formula (2-b), which is useful as an intermediate for producing agricultural chemicals. The method includes a step for obtaining a compound represented by formula (2-a) by oxidizing the compound represented by formula (1) with hydrogen peroxide in the presence of sulfuric acid and/or a C1-6 alkanesulfonic acid that may be halogen-substituted and in the presence of a C2-12 aliphatic carboxylic acid and/or sulfolane. The method also includes a step for obtaining a compound represented by formula (2-b) by nitrating a compound represented by formula (2-a) in the presence of sulfuric acid and/or a C1-6 alkanesulfonic acid that may be halogen-substituted.
    Type: Application
    Filed: June 9, 2015
    Publication date: May 18, 2017
    Inventors: Kazuya UEKI, Toshiyuki KIJI, Hiroaki OKAMOTO
  • Patent number: 9096534
    Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: August 4, 2015
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshiyuki Kiji, Takafumi Fusaka
  • Patent number: 9096533
    Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: August 4, 2015
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshiyuki Kiji, Takafumi Fusaka
  • Publication number: 20150126739
    Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.
    Type: Application
    Filed: January 14, 2015
    Publication date: May 7, 2015
    Inventors: Toshiyuki KIJI, Takafumi FUSAKA
  • Publication number: 20150126738
    Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.
    Type: Application
    Filed: January 14, 2015
    Publication date: May 7, 2015
    Inventors: Toshiyuki KIJI, Takafumi FUSAKA
  • Patent number: 8962625
    Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: February 24, 2015
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshiyuki Kiji, Takafumi Fusaka
  • Patent number: 8541414
    Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: September 24, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshiyuki Kiji, Takafumi Fusaka
  • Publication number: 20120323034
    Abstract: A method comprising an oximation step of reacting a formylalkenylcyclopropanecarboxylic acid ester represented by the formula (1): (wherein, R1 represents an alkyl group optionally having substituent(s) or halogen atom(s), and R2 represents an alkyl group optionally having substituent(s) or a benzyl group optionally having substituent(s)) and hydroxylamine in a solvent in the presence at least one compound selected from the group consisting of carboxylic acids and carboxylic acid metal salts, to produce a hydroxyiminoalkenylcyclopropanecarboxylic acid ester represented by the formula (3): (wherein, R1 and R2 are as defined above).
    Type: Application
    Filed: February 25, 2011
    Publication date: December 20, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kouji Yoshikawa, Toshiyuki Kiji, Jun Ohshita, Toshio Somyo, Manabu Kashiwabara, Yoko Miyanaga
  • Publication number: 20120196750
    Abstract: A pyridazinone compound represented by the formula (I) has excellent effect on weed control and is useful as an active ingredient of herbicides.
    Type: Application
    Filed: March 22, 2012
    Publication date: August 2, 2012
    Inventors: Toshiyuki KIJI, Takafumi Fusaka
  • Publication number: 20090111696
    Abstract: A pyridazinone compound represented by the formula (I) have excellent effect on weed control and are useful as an active ingredient of herbicides.
    Type: Application
    Filed: March 13, 2007
    Publication date: April 30, 2009
    Inventors: Toshiyuki Kiji, Takafumi Fusaka
  • Patent number: 6630592
    Abstract: A process as represented by reaction scheme: which permits industrial mass production of &Dgr;2-1,2,4-oxadiazoline derivatives having excellent insecticidal effects or salts thereof in high yield with advantage, [wherein X1 is halogeno; R1 is optionally substituted alkyl, optionally substituted acyl, or ClCO; R2 is (1) halogeno, (2) C1-6 haloalkyl, (3) C1-6 haloalkoxy, or (4) phenyl optionally substituted with C1-6 haloalkyl; A is nitrogen or ═CR3— (wherein R3 is Cl or CN); R4 is C1-6 alkyl or C1-6 haloalkyl; n is 0, 1 or 2; and X2 is halogeno].
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: October 7, 2003
    Assignee: Sumitomo Chemical Takeda Agro Company, Limited
    Inventors: Yasuyuki Kando, Toshiyuki Kiji
  • Patent number: 6316477
    Abstract: A compound of the formula: wherein Ar is an optionally substituted aromatic hydrocarbon or aromatic heterocyclic group, R is H, halogen or a group bonded through C, N, O, S or P, W is halogen or a group bonded through C, N, O, S or P, X is H or a group bonded through C, N, O or S, Y is H or a group bonded through C, N, O, S or P, or X and Y together with the adjacent nitrogen atom to Y may form an optionally substituted nitrogen-containing heterocyclic group which may further have N, O, S and/or P, or a salt thereof, a method of production thereof and agrochemicals containing the above compound [I]. The compound [I] and their salts are effective in preventing sanitary or horticultural insect pests and animal and plant parasites and can exert potent insecticidal activities when they are applied to harmed living animals or plants.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: November 13, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yasuyuki Kando, Toshiyuki Kiji, Atsuo Akayama, Makoto Noguchi
  • Patent number: 6288088
    Abstract: The present invention relates to a compound of the formula [I]: wherein R1 is C1-6 alkyl or C1-6 haloalkyl; n is 0, 1 or 2; X is (1) group of —NR2R3 wherein R2 and R3 independently represent (i) hydrogen or (ii) C1-6 alkyl which may optionally be substituted with pyridyl, (2) group of —N═CHOR4 wherein R4 represents C1-6 alkyl, (3) group of —N═CHNR6R7 wherein R6 and R7 independently represent (i) hydrogen or (ii) C1-6 alkyl, (4) group of —N═CHAr wherein Ar represents phenyl which may optionally be substituted with substituents selected from the group consisting of hydroxy and C1-3 alkoxy, or (5) pyrrolyl; R5 is optionally substituted alkyl or optionally substituted acyl; R8 is (1) halogen, (2) C1-6 haloalkyl, (3) C1-6 haloalkoxy or (4) phenyl which may optionally be substituted with C1-6 haloalkyl; A is (1) nitrogen atom or (2) group of wherein R9 is chlorine atom or cyano; and B is nitrogen atom or or a sa
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: September 11, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yasuyuki Kando, Makota Noguchi, Akayama Atsuo, Shinichi Masada, Toshiyuki Kiji