Patents by Inventor Takao Sakakura

Takao Sakakura 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 aluminum fluoride
    Patent number: 4041137
    Abstract: In the production of aluminum fluoride, a fluorine compound is absorbed from a gas containing the fluorine compound into a gas absorbing liquor comprising water containing alumina or hydrated alumina, or an aqueous aluminum fluoride solution containing alumina or hydrated alumina, and the absorbed fluorine compound is reacted with alumina or hydrated alumina to precipitate hydrated aluminum fluoride of high quality.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: August 9, 1977
    Assignee: Sumitomo Aluminum Smelting Company, Ltd.
    Inventors: Tatsuo Abe, Toshiki Okamoto, Takao Sakakura, Tatsuo Tateno