Patents by Inventor Akihiko Isogai

Akihiko Isogai 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 a substituted benzoic acid compound
    Patent number: 9580401
    Abstract: To provide an industrial method for producing a substituted benzoic acid compound useful as an intermediate of pharmaceutical and agricultural chemicals with high purity and high yield.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: February 28, 2017
    Assignee: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Hisayoshi Jonishi, Tomohiro Okamoto, Norio Adachi, Akihiko Isogai, Tatsuya Jukurogi, Hideaki Konishi, Fumihiro Fukui
  • METHOD FOR PRODUCING A SUBSTITUTED BENZOIC ACID COMPOUND
    Publication number: 20150119586
    Abstract: To provide an industrial method for producing a substituted benzoic acid compound useful as an intermediate of pharmaceutical and agricultural chemicals with high purity and high yield.
    Type: Application
    Filed: April 30, 2013
    Publication date: April 30, 2015
    Applicant: ISHIHARA SANGYO KAISHA, LTD.
    Inventors: Hisayoshi Jonishi, Tomohiro Okamoto, Norio Adachi, Akihiko Isogai, Tatsuya Jukurogi, Hideaki Konishi, Fumihiro Fukui
  • Method for producing pyrimidine compound
    Patent number: 8440824
    Abstract: To provide a method for producing pyrimidine compound useful as an intermediate for agricultural chemicals or pharmaceuticals, which is simple in operation, presents high yield and produces only a small amount of by-products. The method comprises reacting a compound represented by the formula (I) with a compound represented by the formula (II) in the presence of a pyridine compound to produce a compound represented by the formula (III), a compound represented by the formula (IV) or their mixture.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: May 14, 2013
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Shigeo Murai, Ryoji Koto, Hiroshi Yoshizawa, Takeshi Ohshima, Katsuyoshi Murakami, Takao Awazu, Hisayoshi Jonishi, Takayoshi Ando, Tadashi Nakamura, Norio Adachi, Akihiko Isogai
  • Process for producing toluidine compound
    Patent number: 8338612
    Abstract: Because fluazinam is excellent as an active ingredient of pesticides and highly useful, it is desired to produce it efficiently in a proper form with simple operations at low cost in an environmentally friendly manner. The desired product is obtained in good yields with simple operations by using industrially advantageous reaction systems by a process comprising (1) a step of reacting ACTF and DCDNBTF in the presence of an alkali component, a solvent selected from the group consisting of ketones, nitriles, ethers and esters and a sufficient amount of water to substantially dissolve the alkali component, (2) a step of neutralizing or acidifying the reaction mixture with an acid and (3) a step of removing the solvent by distillation from the mixture containing fluazinam as the reaction product and the reaction solvent to precipitate crystals the product.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: December 25, 2012
    Assignee: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Shigeo Murai, Hiroshi Yoshizawa, Takeshi Ohshima, Katsuyoshi Murakami, Takayoshi Ando, Tadashi Nakamura, Norio Adachi, Akihiko Isogai
  • METHOD FOR PRODUCING PYRIMIDINE COMPOUND
    Publication number: 20110021774
    Abstract: To provide a method for producing pyrimidine compound useful as an intermediate for agricultural chemicals or pharmaceuticals, which is simple in operation, presents high yield and produces only a small amount of by-products. The method comprises reacting a compound represented by the formula (I) with a compound represented by the formula (II) in the presence of a pyridine compound to produce a compound represented by the formula (III), a compound represented by the formula (IV) or their mixture.
    Type: Application
    Filed: April 16, 2009
    Publication date: January 27, 2011
    Applicant: Ishihara Sangyo Kaisha, Ltd.
    Inventors: Shigeo Murai, Ryoji Koto, Hiroshi Yoshizawa, Takeshi Ohshima, Katsuyoshi Murakami, Takao Awazu, Hisayoshi Jonishi, Takayoshi Ando, Tadashi Nakamura, Norio Adachi, Akihiko Isogai
  • PROCESS FOR PRODUCING TOLUIDINE COMPOUND
    Publication number: 20100197930
    Abstract: Because fluazinam is excellent as an active ingredient of pesticides and highly useful, it is desired to produce it efficiently in a proper form with simple operations at low cost in an environmentally friendly manner. The desired product is obtained in good yields with simple operations by using industrially advantageous reaction systems by a process comprising (1) a step of reacting ACTF and DCDNBTF in the presence of an alkali component, a solvent selected from the group consisting of ketones, nitriles, ethers and esters and a sufficient amount of water to substantially dissolve the alkali component, (2) a step of neutralizing or acidifying the reaction mixture with an acid and (3) a step of removing the solvent by distillation from the mixture containing fluazinam as the reaction product and the reaction solvent to precipitate crystals the product.
    Type: Application
    Filed: July 29, 2008
    Publication date: August 5, 2010
    Applicant: Ishihara Sangyo Kaisha Ltd
    Inventors: Shigeo Murai, Hiroshi Yoshizawa, Takeshi Ohshima, Katsuyoshi Murakami, Takayoshi Ando, Tadashi Nakamura, Norio Adachi, Akihiko Isogai
  • Pyrazole compounds, processes for their production and herbicides containing them
    Patent number: 5998334
    Abstract: A pyrazole compound of the formula (I) or its salt: ##STR1## which is useful as a herbicide.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: December 7, 1999
    Assignee: Ishihara Sangyo Kaisha Ltd.
    Inventors: Shigeo Murai, Hiroshi Kikugawa, Hitoshi Nakayama, Makiko Sano, Akihiko Isogai