Patents by Inventor Koichi Yamakoshi

Koichi Yamakoshi 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).

  • 3-substituted-4-pyrimidone derivatives
    Patent number: 7427615
    Abstract: A pyrimidone derivative represented by formula (I) or a salt thereof, or a solvate thereof or a hydrate thereof having inhibitory activity against tau protein kinase 1: wherein R1 represents a C1-C12 alkyl group which may be substituted; R represents, for example, a group represented by the following formula (II): wherein R2 and R3 independently represent a hydrogen atom or a C1-C8 alkyl group; R4 represents a benzene ring which may be substituted, a naphthalene ring which may be substituted, an indan ring which may be substituted, a tetrahydronaphthalene ring which may be substituted, or an optionally substituted heterocyclic ring having 1 to 4 hetero atoms selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom, and having 5 to 10 ring-constituting atoms in total.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: September 23, 2008
    Assignees: Mitsubishi Pharma Corporation, Sanofi-Synthelabo
    Inventors: Fumiaki Uehara, Keiichi Aritomo, Aya Shoda, Shinsuke Hiki, Masahiro Okuyama, Yoshihiro Usui, Mitsuru Ooizumi, Kazutoshi Watanabe, Koichi Yamakoshi
  • 3-Substituted-4-pyrimidone derivatives
    Publication number: 20050090490
    Abstract: a pyrimidone derivative represented by formula (I) or a salt thereof, or a solvate thereof or a hydrate thereof having inhibitory activity against tau protein kinase 1: wherein R1 represents a C1-C12 alkyl group which may be substituted; R represents, for example, a group represented by the following formula (II): wherein R2 and R3 independently represent a hydrogen atom or a C1-C8 alkyl group; R4 represents a benzene ring which may be substituted, a naphthalene ring which may be substituted, an indan ring which may be substituted, a tetrahydronaphthalene ring which may be substituted, or an optionally substituted heterocyclic ring having 1 to 4 heteno atoms selected from the group consisting of oxygen atom, sulfur atom and nitrogen atom, and having 5 to 10 ring-constituting atoms in total.
    Type: Application
    Filed: September 20, 2002
    Publication date: April 28, 2005
    Inventors: Fumiaki Uehara, Keiichi Aritomo, Aya Shoda, Shinsuke Hiki, Masahiro Okuyama, Yoshihiro Usui, Mitsuru Ooizumi, Kazutoshi Watanabe, Koichi Yamakoshi