Patents by Inventor Humihiko Nagasaki

Humihiko Nagasaki 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 for the production of 3-phenylpyrrole
    Patent number: 4471126
    Abstract: There is a method for the production of 3-phenylpyrrole derivatives having the general formula ##STR1## wherein X is halogen, nitro or haloalkyl having 1 to 3 carbon atoms;n is 0, 1 or 2; andZ is hydrogen or halogen;which comprises reacting a compound having the general formula ##STR2## wherein X and n are as previously defined; andY is hydrogen or halogen;with ammonia or aqueous ammonia in an organic solvent.A compound having the general formula [I] is useful as fungicide or intermediate thereof.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: September 11, 1984
    Assignee: Nippon Soda Company Limited
    Inventors: Akiyoshi Ueda, Humihiko Nagasaki, Yutaka Takakura, Shigeru Kojima