Patents by Inventor Terumi Uchimura

Terumi Uchimura 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 the treatment of sludge
    Patent number: 4203838
    Abstract: Process for treating sewage sludge at relatively low temperatures below 165.degree. C. under pressure. The sludge is heat treated in a reactor in which it is brought into close, uniform contact with air with the discharge of air bubbles from the reactor effectively prevented. The liquor separated from the treated sludge is treated by two steps of the activated sludge process. The malodorous gas produced during the treatment of sludge is also deodorized or incinerated. A fully closed treatment process is provided which does not cause any secondary pollution problem.
    Type: Grant
    Filed: December 8, 1978
    Date of Patent: May 20, 1980
    Assignee: Kubota Tekko Kabushiki Kaisha
    Inventors: Koh Shimizu, Terumi Uchimura, Ken-Ichi Uede, Katuyoshi Nakamura