Patents by Inventor Hitoshi Betchaku

Hitoshi Betchaku 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 treating waste liquid from production plant for hydrocarbons or oxygen-containing compounds
    Patent number: 7641797
    Abstract: A method for treating a formaldehyde-containing waste liquid, which is formed as a byproduct in a plant for the production of hydrocarbons or oxygen-containing compounds, containing the steps of: subjecting formaldehyde in the liquid to chemical treatment; and treating the resulting waste liquid, while being aerated, by using a membrane bioreactor that is composed of a microorganism or enzyme and a separation membrane.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: January 5, 2010
    Assignees: Toyo Engineering Corporation, Water Re-Use Promotion Center
    Inventors: Hiroaki Ikebe, Masayuki Uchida, Hitoshi Betchaku
  • Method of Treating Waste Liquid from Production Plant for Hydrocarbons or Oxygen-Containing Compounds
    Publication number: 20070289923
    Abstract: A method for treating a formaldehyde-containing waste liquid, which is formed as a byproduct in a plant for the production of hydrocarbons or oxygen-containing compounds, containing the steps of: subjecting formaldehyde in the liquid to chemical treatment; and treating the resulting waste liquid, while being aerated, by using a membrane bioreactor that is composed of a microorganism or enzyme and a separation membrane.
    Type: Application
    Filed: October 21, 2005
    Publication date: December 20, 2007
    Inventors: Hiroaki Ikebe, Masayuki Uchida, Hitoshi Betchaku, Toshizo Iida