Patents by Inventor Motoki Takashima

Motoki Takashima 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).

  • Method of producing 2-amino-3-nitro-5-halogenopyridine
    Patent number: 5453512
    Abstract: A 2-amino-3-nitro-5-halogenopyridine is formed from a 2-acylaminopyridine by way of a 2-acylamino-5-halogenopyridine. The 2-acetamido-5-bromopyridine may be formed from the 2-acylaminopyridine by way of a 2-acylaminopyridinium-HBr.sub.3 salt.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: September 26, 1995
    Assignee: Ichikawa Gosei Chemical Co., Ltd.
    Inventors: Yoshio Igarashi, Makoto Shimoyamada, Motoki Takashima, Tetsuya Suzuki
  • Method of producing 2-acyl amino 5-halogenopyridine compounds
    Patent number: 5290943
    Abstract: A 2-amino-3-nitro-5-halogenopyridine is formed from a 2-acylaminopyridine by way of a 2-acylamino-5-halogenopyridine. The 2-acetamido-5-bromopyridine may be formed from the 2-acylaminopyridine by way of a 2-acylaminopyridinium-HBr.sub.3 salt.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: March 1, 1994
    Assignee: Ichikawa Gosei Chemical Co., Ltd.
    Inventors: Yoshio Igarashi, Makoto Shimoyamada, Motoki Takashima, Tetsuya Suzuki