Patents by Inventor Keiji Koizumi

Keiji Koizumi 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: 20160145242
    Abstract: A medicinal active ingredient is provided which is useful for the treatment or prevention of inflammatory diseases, diseases caused by lipid oxidation, retinochoroidal disorders. A phenylimidazole derivative represented by Formula (IB) or a salt thereof is provided. A therapeutic medicine or preventive medicine is provided for inflammatory diseases, diseases caused by lipid oxidation, or retinochoroidal disorders, the medicine including at least one selected from the phenylimidazole derivative, a salt thereof, and metabolites thereof as an active ingredient. In Formula (IB), R1a represents an alkyl group etc., R2 represents an amino group etc., R3 represents a halogen atom, an alkyl group etc., R4 represents a cyano group etc., R5 represents an alkyl group etc., and R6 represents an alkyl group etc.
    Type: Application
    Filed: June 26, 2014
    Publication date: May 26, 2016
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Nobuhiro UMEDA, Shiro TSUBOKURA, Seiichi UCHIDA, Keiji KOIZUMI, Hiroko MOROE, Ichiro OHSHIO
  • Patent number: 8993592
    Abstract: Provided is a cyclic amine compound, represented by the following formula (I) that has superior acaricidal activity, has superior properties and safety, and which can be synthesized industrially advantageously, a salt thereof and an acaricide: (wherein, Cy1 and Cy2 respectively and independently represent, for example, an aryl group, R1a, R1b, R2a, R2b, R3a, R3b, R4a, R4b and R5a respectively and independently represent, for example, a hydrogen atom, R1a and R2a or R3a and R4a may together form, for example, an ethylene group, R10, R11, R20 and R21 respectively and independently represent, for example, an alkyl group, R10 or R11 may respectively or mutually, or together with an atom that bonds on Cy1, form a ring, R20 or R21 on Cy2 may respectively or mutually, or with an atom that bonds on Cy2, form a ring, m represents an integer of 0 to 5, n represents an integer of 0 to 5, p represents an integer of 0 to 5, and r represents an integer of 0 to 5).
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: March 31, 2015
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Isami Hamamoto, Keiji Koizumi, Makio Yano, Masahiro Kawaguchi, Hazumi Nomura, Tetsuya Haruyama
  • Patent number: 8980912
    Abstract: The present invention provides a cyclic amine compound represented by formula (I) (in formula (I), Cy1 and Cy2 independently represent a C6-10 aryl group or a heterocyclyl group; R1a to R5a independently represent a hydrogen atom or an unsubstituted or substituted C1-6 alkyl group; R10, R11, R20 and R21 independently represent an unsubstituted or substituted C1-6 alkyl group, an unsubstituted or substituted C1-6 alkoxy group, a halogen atom or the like; m, n, p, and r each represent an integer of 0 to 5; and Y represents an oxygen atom or the like) or salt thereof, and an acaricide including the same.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: March 17, 2015
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Isami Hamamoto, Keiji Koizumi, Masahiro Kawaguchi, Hisashi Tanigawa, Takehiko Nakamura, Tomomi Kobayashi
  • Publication number: 20120309964
    Abstract: The present invention provides a cyclic amine compound represented by formula (I) (in formula (I), Cy1 and Cy2 independently represent a C6-10 aryl group or a heterocyclyl group; R1a to R5a independently represent a hydrogen atom or an unsubstituted or substituted C1-6 alkyl group; R10, R11, R20 and R21 independently represent an unsubstituted or substituted C1-6 alkyl group, an unsubstituted or substituted C1-6 alkoxy group, a halogen atom or the like; m, n, p, and r each represent an integer of 0 to 5; and Y represents an oxygen atom or the like) or salt thereof, and an acaricide including the same.
    Type: Application
    Filed: February 24, 2011
    Publication date: December 6, 2012
    Inventors: Isami Hamamoto, Keiji Koizumi, Masahiro Kawaguchi, Hisashi Tanigawa, Takehiko Nakamura, Tomomi Kobayashi
  • Publication number: 20120289700
    Abstract: Provided is a cyclic amine compound, represented by the following formula (I) that has superior acaricidal activity, has superior properties and safety, and which can be synthesized industrially advantageously, a salt thereof and an acaricide: (wherein, Cy1 and Cy2 respectively and independently represent, for example, an aryl group, R1a, R1b, R2a, R2b, R3a, R3b, R4a, R4b and R5a respectively and independently represent, for example, a hydrogen atom, R1a and R2a or R3a and R4a may together form, for example, an ethylene group, R10, R11, R20 and R21 respectively and independently represent, for example, an alkyl group, R10 or R11 may respectively or mutually, or together with an atom that bonds on Cy1, form a ring, R20 or R21 on Cy2 may respectively or mutually, or with an atom that bonds on Cy2, form a ring, m represents an integer of 0 to 5, n represents an integer of 0 to 5, p represents an integer of 0 to 5, and r represents an integer of 0 to 5).
    Type: Application
    Filed: December 17, 2010
    Publication date: November 15, 2012
    Inventors: Isami Hamamoto, Keiji Koizumi, Makio Yano, Masahiro Kawaguchi, Hazumi Nomura, Tetsuya Haruyama