Patents by Inventor Shosuke Imamura

Shosuke Imamura 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).

  • Herbicidal compound
    Patent number: 4185994
    Abstract: Herbicidal compounds are the compounds having the formula ##STR1## wherein R represents H or CH.sub.3 and X represents H or Cl.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: January 29, 1980
    Assignee: Hodogaya Chemical Company, Limited
    Inventors: Takayuki Isogawa, Makoto Nagatomi, Shosuke Imamura
  • Process for producing polyhalogenated phenols
    Patent number: 4005151
    Abstract: A process for producing polyhalogenated phenol by mixing a polyhalogenated aniline with an aqueous sulfuric acid solution to obtain a suspension of fine particles of polyhalogenated aniline sulfate having the particle size of 50 .mu. or less, diazotizing the polyhalogenated aniline sulfate to obtain polyhalogenate benzenediazonium sulfate, hydrolyzing the resulting benzenediazonium sulfate by heating it as such, recycling to the diazotization step the aqueous sulfuric acid solution from which the desired polyhalogenated phenol has been separated.
    Type: Grant
    Filed: March 5, 1975
    Date of Patent: January 25, 1977
    Assignee: Hodogaya Chemical Co., Ltd.
    Inventors: Masataka Wataya, Nobuo Onodera, Shosuke Imamura