Patents by Inventor Takashi Tokutomi

Takashi Tokutomi 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 continuously removing fine dust particles from gases
    Patent number: 4341536
    Abstract: A method for continuously removing fine dust from gases which contain them, consisting of: introducing the gas at a gas linear velocity of 10 to 80 m/sec and a liquid at a rate such that the liquid-to-gas ratio; L/G, is 1 to 50 l/m.sup.3, in parallel, into slit(s) or hole(s) which are set in tray(s) causing impingement onto a baffle plate which is set beneath the tray; and then carrying away the fine dust particles from the gas by the liquid, which is separated from the gas, is disclosed, along with apparatus to effectuate the process.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: July 27, 1982
    Assignee: Mitsubishi Rayon Company, Ltd.
    Inventors: Fumiki Murakami, Minoru Ikeda, Takashi Tokutomi, Toshiharu Nakano
  • Method of separating and purifying methacrylic acid
    Patent number: 4142058
    Abstract: A method for separating and purifying methacrylic acid is disclosed in which an aqueous solution (A) of methacrylic acid containing acetic acid is brought into contact under counter-current flow with a mixed solvent (B) of methyl methacrylate and toluene in a ratio of from 3 : 2 to 1 : 9 by weight, to extract substantially the whole amount of methacrylic acid in solution (A) into mixed solvent (B); after which the methacrylic acid is separated and purified by distillation.
    Type: Grant
    Filed: December 8, 1977
    Date of Patent: February 27, 1979
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Hiroshi Matsumura, Takashi Tokutomi, Hideo Matsuzawa