Patents by Inventor Hidekatsu Fujishima

Hidekatsu Fujishima 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 processing exhaust gas
    Patent number: 8574506
    Abstract: Disclosed are a method and an apparatus for processing an exhaust gas, which enable to suppress decrease of pH and increase of ORP of a mixture of an aqueous solution of a reducing agent and an aqueous alkali solution circulated within a wet reactor comprising a reduction reaction region and an oxidation reaction region. The method and apparatus enable to prevent deterioration of the mixed aqueous solution, and can be continuously operated for a long time. Specifically, the ORP and pH of the mixed aqueous solution of the aqueous solution of a reducing agent and the aqueous alkali solution to be circulated within the wet reactor are measured, and a fresh aqueous solution of a reducing agent and a fresh aqueous alkali solution are supplied, if necessary, into a reservoir unit arranged in the lower part of the wet reactor so that the ORP and pH of the mixed aqueous solution are kept within predetermined ranges.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: November 5, 2013
    Assignees: Osaka Prefecture University Public Corporation, Japan Science and Technology Ageny
    Inventors: Tomoyuki Kuroki, Masaaki Okubo, Toshiaki Yamamoto, Hidekatsu Fujishima, Keiichi Otsuka
  • METHOD AND APPARATUS FOR PROCESSING EXHAUST GAS
    Publication number: 20100044208
    Abstract: Disclosed are a method and an apparatus for processing an exhaust gas, which enable to suppress decrease of pH and increase of ORP of a mixture of an aqueous solution of a reducing agent and an aqueous alkali solution circulated within a wet reactor comprising a reduction reaction region and an oxidation reaction region. The method and apparatus enable to prevent deterioration of the mixed aqueous solution, and can be continuously operated for a long time. Specifically, the ORP and pH of the mixed aqueous solution of the aqueous solution of a reducing agent and the aqueous alkali solution to be circulated within the wet reactor are measured, and a fresh aqueous solution of a reducing agent and a fresh aqueous alkali solution are supplied, if necessary, into a reservoir unit arranged in the lower part of the wet reactor so that the ORP and pH of the mixed aqueous solution are kept within predetermined ranges.
    Type: Application
    Filed: February 15, 2008
    Publication date: February 25, 2010
    Inventors: Tomoyuki Kuroki, Masaaki Okubo, Toshiaki Yamamoto, Hidekatsu Fujishima, Keiichi Otsuka