Patents by Inventor Kouzou Hirosawa

Kouzou Hirosawa 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 treating waste water
    Patent number: 4966714
    Abstract: A process is disclosed for treating waste water which comprises the steps of adding thermal decomposition product consisting of CaO-MgO-SiO.sub.2 system compound singly or in combination with at least a metal salt selected from the group consisting of iron salts and magnesium salts to waste water containing an emulsion or a latex, thereby causing coagulation and sedimentation of particles consisting mainly of resin existing in the waste water and then removing the coagulated particles.
    Type: Grant
    Filed: October 18, 1989
    Date of Patent: October 30, 1990
    Assignee: Ube Industries, Ltd.
    Inventors: Kouzou Hirosawa, Yukio Kanazawa