Patents by Inventor Tokuji Iijima, deceased

Tokuji Iijima, deceased 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).

  • Patent number: 4152218
    Abstract: Apparatus for the distillation of sea water and desulfurization has a vessel directly contacting waste gases exhausting from a boiler with sea water for absorbing sulfur oxides contained within the waste gases, an oxidation device to convert the sulfites that are produced by absorption of the sulfur oxide into sulfates through a catalytic action of metallic ions in the sea water, a decarbonization device, a deaerator, and a heating type distillation apparatus that uses the sea water used for the desulfurization as supplementary water. The oxidation, desulfurization and the separation of air are processes conducted continuously.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: May 1, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Tsuneo Narita, Shigeo Yoshihara, Yoshihiro Ikenaga, Tokuji Iijima, deceased
  • Patent number: 4085194
    Abstract: A waste flue gas desulfurizing method in which a waste flue gas containing sulfurous acid gas is contacted directly with sea-water, whereby the sulfurous acid gas is absorbed in the sea-water and concurrently sulfites are formed in the sea-water by the reaction between the sulfurous acid ions and metal ions present in the sea-water, and then the carbonic acid component contained in the sea-water which is then in the acidic region is released therefrom by a decarbonation operation to restore the pH value of the sea-water in the neutral region, and thereafter oxygen contained in air or from other source is introduced into the sulfite-containing sea-water to convert said sulfites into sulfates.
    Type: Grant
    Filed: April 27, 1973
    Date of Patent: April 18, 1978
    Assignee: Hitachi, Ltd.
    Inventors: Kouji Otani, Toshio Sawa, Osamu Kuroda, Fumito Nakajima, Tokuji Iijima, deceased