Patents by Inventor Takashi Iitake

Takashi Iitake 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).

  • Toxic substance-detecting system with fixed microorganism membrane for water quality-monitoring
    Patent number: 5160604
    Abstract: A toxic substance-detecting device detects toxic substances in water by use of a microorganism sensor to ascertain the safety of affluents flowing into sewage-treating processes, environmental waters such as rivers, and waters flowing into water purification plants and a water quality-monitoring system employing a detecting device. The device includes a fixed micro-organism membrane and apparatus for circulating a buffer solution of micro-organism substrate and nutrient to one side of the membranne and solutions of water to be examined, standard and cleaning water to the other side.
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: November 3, 1992
    Assignees: Fuji Electric Co., Ltd., Public Works Research Institute
    Inventors: Eiichi Nakamura, Hiroaki Tanaka, Yoshiharu Tanaka, Takashi Iitake, Hiroshi Hoshikawa