Patents by Inventor Takushi Kurihara

Takushi Kurihara 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).

  • Production of imidazole derivatives and novel intermediates of the derivatives
    Patent number: 6951944
    Abstract: An improvement in the production of imidazole derivatives including histamine H3 agonist immepip and histamine H3 antagonist VUF4929.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: October 4, 2005
    Assignee: Azwell Inc.
    Inventors: Yasuhiko Sakamoto, Takushi Kurihara, Shinya Harusawa
  • Production of imidazole derivatives and novel intermediates of the derivatives
    Publication number: 20050043277
    Abstract: An improvement in the production of imidazole derivatives including histamine H3 agonist immepip and histamine H3 antagonist VUF4929. Desired imidazole derivatives can be easily obtained in high yield by using novel intermediates represented by the general formula (I): (I) wherein R1 is an amino-protecting group; R2 and R3 are each independently hydrogen, lower alkyl, or hydroxylated lower alkyl; R4 is lower alkyl, halogenated lower alkyl, or substituted or unsubstituted phenyl; and A is C1-3 alkylene.
    Type: Application
    Filed: February 18, 2003
    Publication date: February 24, 2005
    Inventors: Yasuhiko Sakamoto, Takushi Kurihara, Shinya Harusawa