Patents by Inventor Hatsuo Seito

Hatsuo Seito 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 and apparatus for removing nitrogen oxides from the gases containing nitrogen oxides
    Patent number: 4199554
    Abstract: Disclosed herein is a method of removing the nitrogen oxides from the gases containing nitrogen oxides by contacting any such gas with ammonia at a temperature of from 100.degree. C. to 230.degree. C. in the presence of a catalyst so that a reaction takes place between the nitrogen oxides and ammonia. This reaction is conducted in such a manner as to prevent the by-produced ammonium nitrate from depositing on the catalyst. There is also disclosed a specific apparatus for practicing the method.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: April 22, 1980
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tadashi Araki, Hatsuo Seito, Masayuki Funabashi, Ritaro Saito, Koji Seguchi