Patents by Inventor Hyoei Kawai

Hyoei Kawai 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).

  • 4-pyridone compound or salt thereof, and pharmaceutical composition and formulation including same
    Patent number: 11161830
    Abstract: An object of the present invention is to provide a compound or a salt thereof having anti-HBV activity, a pharmaceutical composition, an anti-hepatitis B virus agent, a production inhibitor of DNA of a hepatitis B virus, and a production or secretion inhibitor of a hepatitis B surface antigen. According to the present invention, provided are a compound represented by General Formula [1] or a salt thereof: (in the formula, R1 represents a benzothiazolyl group which may be substituted (in which a carbon atom constituting the 6-membered ring of the benzothiazolyl group of R1 is bonded to the nitrogen atom of the pyridone ring); R2 represents a C2-6 alkenyl group which may be substituted, or the like; and R3 represents a hydrogen atom or the like).
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: November 2, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Megumi Ookubo, Shinichiro Sekine, Tomoyuki Mashiko, Hyoei Kawai, Hirofumi Fukunaga
  • 4-PYRIDONE COMPOUND OR SALT THEREOF, AND PHARMACEUTICAL COMPOSITION AND FORMULATION INCLUDING SAME
    Publication number: 20200017459
    Abstract: An object of the present invention is to provide a compound or a salt thereof having anti-HBV activity, a pharmaceutical composition, an anti-hepatitis B virus agent, a production inhibitor of DNA of a hepatitis B virus, and a production or secretion inhibitor of a hepatitis B surface antigen. According to the present invention, provided are a compound represented by General Formula [1] or a salt thereof: (in the formula, R1 represents a benzothiazolyl group which may be substituted (in which a carbon atom constituting the 6-membered ring of the benzothiazolyl group of R1 is bonded to the nitrogen atom of the pyridone ring); R2 represents a C2-6 alkenyl group which may be substituted, or the like; and R3 represents a hydrogen atom or the like).
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Megumi Ookubo, Shinichiro Sekine, Tomoyuki Mashiko, Hyoei Kawai, Hirofumi Fukunaga