Patents by Inventor Akinori Morikawa

Akinori Morikawa 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).

  • Method for producing quinolin-4(1H)-one derivative
    Patent number: 11267787
    Abstract: [Problem] The present invention provides a method for producing and isolating a target quinolone derivative using general industrial facilities with high purity. [Solving means] The present invention also provides a method for producing a quinolone derivative, the method including reacting a ketone with an anthranilic acid derivative using an aluminum halide and removing the aluminum halide under basic conditions.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: March 8, 2022
    Assignees: NIPPON KAYAKU CO., LTD, MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Akinori Morikawa, Hirokazu Kuroda, Kazumi Yamamoto, Nozomu Nakanishi
  • METHOD FOR PRODUCING QUINOLIN-4(1H)-ONE DERIVATIVE
    Publication number: 20210070710
    Abstract: [Problem] The present invention provides a method for producing and isolating a target quinolone derivative using general industrial facilities with high purity. [Solving means] The present invention also provides a method for producing a quinolone derivative, the method including reacting a ketone with an anthranilic acid derivative using an aluminum halide and removing the aluminum halide under basic conditions.
    Type: Application
    Filed: December 12, 2018
    Publication date: March 11, 2021
    Applicants: NIPPON KAYAKU CO., LTD., MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Akinori MORIKAWA, Hirokazu KURODA, Kazumi YAMAMOTO, Nozomu NAKANISHI
  • Process for producing 4-carbonyloxyquinoline derivatives
    Patent number: 9126934
    Abstract: An objective of the present invention is to provide a process for producing 4-carbonyl oxyquinoline derivatives useful as agricultural and horticultural pesticides and fungicides. The objective can be attained by a process for producing 4-carbonyl oxyquinoline derivatives represented by general formula (1), the process including reacting a quinolone derivative with a halogenated compound or an acid anhydride in the presence of a phase transfer catalyst and a base.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: September 8, 2015
    Assignees: NIPPON KAYAKU CO., LTD., MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Shizuo Shimano, Akinori Morikawa, Kenichi Yamamoto, Hiroki Hotta, Kazumi Yamamoto, Nozomu Nakanishi, Nobuto Minowa
  • Stabilized crystal of 2-ethyl-3,7-dimethyl-6-(4-(trifluoromethoxy)phenoxy)quinoline-4-yl methyl carbonate, process for producing the crystal, and agricultural chemical composition comprising the crystal
    Patent number: 8648195
    Abstract: An objective of the present invention is to provide a crystal of 2-ethyl-3,7-dimethyl-6-(4-(trifluoromethoxy)phenoxy)quinoline-4-yl methyl carbonate having stable physicochemical properties. The objective is attained by a crystal of 2-ethyl-3,7-dimethyl-6-(4-(trifluoromethoxy)phenoxy)quinoline-4-yl methyl carbonate that exhibits a diffraction peak pattern shown in FIG. 1 as determined by powder X-ray diffractometry.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: February 11, 2014
    Assignees: Nippon Kayaku Co., Ltd., Meiji Seika Pharma Co., Ltd.
    Inventors: Kouki Tanigakiuchi, Mikio Sekiguchi, Hiroki Hotta, Shizuo Shimano, Akinori Morikawa, Kazumi Yamamoto, Nozomu Nakanishi, Nobuto Minowa, Takashi Watanabe
  • PROCESS FOR PRODUCING 4-CARBONYLOXYQUINOLINE DERIVATIVES
    Publication number: 20130245271
    Abstract: An objective of the present invention is to provide a process for producing 4-carbonyl oxyquinoline derivatives useful as agricultural and horticultural pesticides and fungicides. The objective can be attained by a process for producing 4-carbonyl oxyquinoline derivatives represented by general formula (1), the process including reacting a quinolone derivative with a halogenated compound or an acid anhydride in the presence of a phase transfer catalyst and a base.
    Type: Application
    Filed: November 16, 2011
    Publication date: September 19, 2013
    Applicants: MEIJI SEIKA PHARMA CO., LTD., NIPPON KAYAKU CO., LTD.
    Inventors: Shizuo Shimano, Akinori Morikawa, Kenichi Yamamoto, Hiroki Hotta, Kazumi Yamamoto, Nozomu Nakanishi, Nobuto Minowa
  • STABILIZED CRYSTAL OF 2-ETHYL-3,7-DIMETHYL-6-(4-(TRIFLUOROMETHOXY)PHENOXY)QUINOLINE-4-YL METHYL CARBONATE, PROCESS FOR PRODUCING THE CRYSTAL, AND AGRICULTURAL CHEMICAL COMPOSITION COMPRISING THE CRYSTAL
    Publication number: 20130045989
    Abstract: An objective of the present invention is to provide a crystal of 2-ethyl-3,7-dimethyl-6-(4-(trifluoromethoxy)phenoxy)quinoline-4-yl methyl carbonate having stable physicochemical properties. The objective is attained by a crystal of 2-ethyl-3,7-dimethyl-6-(4-(trifluoromethoxy)phenoxy)quinoline-4-yl methyl carbonate that exhibits a diffraction peak pattern shown in FIG. 1 as determined by powder X-ray diffractometry.
    Type: Application
    Filed: February 22, 2011
    Publication date: February 21, 2013
    Inventors: Kouki Tanigakiuchi, Mikio Sekiguchi, Hiroki Hotta, Shizuo Shimano, Akinori Morikawa, Kazumi Yamamoto, Nozomu Nakanishi, Nobuto Minowa, Takashi Watanabe
  • Process for producing 6-aryloxyquinoline derivative and intermediate therefor
    Patent number: 8367833
    Abstract: Disclosed is a process for producing 6-aryloxyquinoline derivatives useful as insecticides or fungicides for agricultural and horticultural use. The process comprises a cyclization reaction step of reacting an anthranilic acid derivative represented by general formula (1) with a kenone in the presence of an acid to obtain a quinolone derivative and a condensation reaction step of reacting the quinolone derivative with a halogen compound or an acid anhydride to obtain a quinoline derivative.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: February 5, 2013
    Assignees: Nippon Kayaku Co., Ltd., Meiji Seika Pharma Co., Ltd.
    Inventors: Yasuhito Kato, Shizuo Shimano, Akinori Morikawa, Hiroki Hotta, Kazumi Yamamoto, Nozomu Nakanishi, Nobuto Minowa, Hiroshi Kurihara
  • PROCESS FOR PRODUCING 6-ARYLOXYQUINOLINE DERIVATIVE AND INTERMEDIATE THEREFOR
    Publication number: 20110118468
    Abstract: Disclosed is a process for producing 6-aryloxyquinoline derivatives useful as insecticides or fungicides for agricultural and horticultural use. The process comprises a cyclization reaction step of reacting an anthranilic acid derivative represented by general formula (1) with a ketone in the presence of an acid to obtain a quinolone derivative and a condensation reaction step of reacting the quinolone derivative with a halogen compound or an acid anhydride to obtain a quinoline derivative.
    Type: Application
    Filed: July 13, 2009
    Publication date: May 19, 2011
    Inventors: Yasuhito Kato, Shizuo Shimano, Akinori Morikawa, Hiroki Hotta, Kazumi Yamamoto, Nozomu Nakanishi, Nobuto Minowa, Hiroshi Kurihara