Patents by Inventor Hirro Okada

Hirro Okada 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).

  • Fluidized-bed type multistage solid-liquid contact apparatus
    Patent number: 4042500
    Abstract: Disclosed are improvements in and relating to a fluidized-bed type multistage solid-liquid contact apparatus which comprises a contact column incorporating therein a multiplicity of a spaced and horizontal support plates each carrying thereon a fluidized bed of solid particles and having a downcomer for communicating between the upper and lower sides of the plate, a storage tank for the liquid to be treated by contact with said layer of fluidized solid particles in said contact column, a storage tank for receiving the treated liquid and a storage tank for solid particles for use in said layers.
    Type: Grant
    Filed: May 28, 1975
    Date of Patent: August 16, 1977
    Assignee: Kurita Water Industries Limited
    Inventors: Yasunao Misaka, Ikuo Tanaka, Hirro Okada, Chuichi Goto, Moriyuki Hirota, Masaaki Uesugi, Mitsuru Tsuchiya