Patents by Inventor Syojiro Iwai

Syojiro Iwai 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).

  • Waste water treatment method and apparatus
    Patent number: 4039447
    Abstract: A waste water treatment method and apparatus where ferromagnetic powder is added to the waste water and solids suspended in the waste water are formed into coagulated flocs, and the flocs are magnetically attracted and deposited on magnet plates so as to remove the solids from the waste water, thereby purifying the waste water. The magnetic powder can be recovered for reuse.
    Type: Grant
    Filed: November 14, 1975
    Date of Patent: August 2, 1977
    Assignee: Miura Engineering International Company Ltd.
    Inventors: Mitugi Miura, Hisao Matubayasi, Syojiro Iwai