Patents by Inventor Heiji Tanaka

Heiji Tanaka 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).

  • Exhaust gas desulfurization system
    Patent number: 6051055
    Abstract: An exhaust gas desulfurization system includes a spray pipe which is provided with a plurality of nozzles in the lengthwise direction and whose one end is closed and arranged horizontally in an absorption tower through which the exhaust gas passes vertically. Absorbent slurry is fed from the other end of the spray pipe and is injected upward from the nozzles, by which absorbent slurry is brought into contact with the exhaust gas to perform treatment in the absorption tower. The flow passage on the closed end side of the pipe is present in a shape such that the flow passage cross-sectional area decreases toward the closed end.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: April 18, 2000
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Naohiko Ukawa, Toru Takashina, Susumu Okino, Kazuaki Kimura, Koichiro Iwashita, Kouji Ikeda, Heiji Tanaka