Patents by Inventor Kawamura Keita

Kawamura Keita 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 and apparatus for desulfurization and denitrification of waste gas by multi-stage electron beam irradiation
    Patent number: 4435260
    Abstract: Removal of NO.sub.x and SO.sub.x from waste gases is carried out by irradiation of the gas with ionizing radiation at a dose such as to reduce the content of NO.sub.x and SO.sub.x to a first predetermined level and passing such gas through subsequent irradiating stages with the dose of irradiation of the gas in the last stage being determined by the levels of NO.sub.x and SO.sub.x entering said last stage whereby to reduce such contaminants to desired levels and thereafter passing the gas through an aerosol collector.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: March 6, 1984
    Assignee: Ebara Corporation
    Inventors: Yamada Koichi, Kawamura Keita, Aoki Shinji