Patents by Inventor Fumiaki Ikeuchi

Fumiaki Ikeuchi 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).

  • Process for the production of pyridine derivatives
    Patent number: 6509469
    Abstract: Provided is a process for producing high-purity pyridine derivatives in a high yield at a low cost without causing pollution problems. Pyridine derivatives are produced by reacting 1,2,4-triazine compound with a vinyl carboxylate having a specific structure.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: January 21, 2003
    Assignee: Sankio Chemical Co., Ltd.
    Inventors: Taichi Shintou, Fumiaki Ikeuchi
  • Process for the production of 2-pyridylpyridine derivatives
    Patent number: 6504032
    Abstract: A process for producing a 2-pyridylpyridine derivative usable as an intermediate for medicines or agricultural chemicals is provided, which does not require expensive metal catalysts, which does not cause environmental problems, and which can be conducted on an industiral scale. The process comprises the step (A) of producing an amidrazone compound from a cyano group-containing heterocyclic compound in water, the step (B) of producing a 1,2,4-triazine compound from the amidrazone compound in water, and the step (C) of producing a 2-pyridylpyridine derivative from the 1,2,4-triazine compound.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: January 7, 2003
    Assignee: Sankio Chemical Co., Ltd.
    Inventors: Fumiaki Ikeuchi, Taichi Shintou, Hirokazu Suda