Patents by Inventor Shigehito Ikeda

Shigehito Ikeda 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).

  • Continuous microorganism cultivating apparatus
    Patent number: 4948736
    Abstract: A continuous microorganism cultivating apparatus has a stock solution tank which receives a stock solution for a microbial reaction and is provided with a cylindrical filter through which the stock solution is passed. The stock solution is separated by the filter into filtrate containing a metabolic product and concentrated liquid containing microbes. The concentrated liquid is then recycled to the stock solution. The filter is a ceramic filter having a multitude of pores, which is connected to a back wash device.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: August 14, 1990
    Assignee: Toshiba Ceramics Co., Ltd.
    Inventors: Takeshi Kobayashi, Masayuki Taniguchi, Shunji Yasuda, Shigehito Ikeda
  • Activated sludge treatment apparatus
    Patent number: 4861471
    Abstract: An activated sludge treatment apparatus in which waste water is introduced into a sludge tank and an activated sludge treatment is performed in said sludge tank, the improvement characterized in that a ceramic filter is provided in a passage through which waste water as effluent from said sludge tank is to be passed, and the waste water is allowed to pass through the interior of said ceramic filter and thereby separated into activated sludge and treatment water.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: August 29, 1989
    Assignee: Toshiba Ceramics Co., Ltd.
    Inventors: Shinichi Nakao, Shunji Yasuda, Shigehito Ikeda