Patents by Inventor Kohji Kitazawa

Kohji Kitazawa 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).

  • Process for removing ash from coal
    Patent number: 4482351
    Abstract: A process for removing ash from coal comprising the steps of transferring pulverized coal to be treated by entraining it on a stream A of anti-oxidation gas, feeding the coal laden gas into dry-type electric precipitating chamber means 2 after suitably adjusting the temperature and humidity of the gas during transport, and separating particulate ash from the coal particles by capturing the former in the chamber means 2 by virtue of difference in specific resistance between the two kinds of particles, whereby highly purified coal B is obtained as entrained on the gas stream at the outlet 3 of the chamber means 2.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: November 13, 1984
    Assignee: Hitachi Shipbuilding & Engineering Co., Ltd.
    Inventors: Kohji Kitazawa, Toshio Ozaki