Patents by Inventor Ryokichi Yamada

Ryokichi Yamada 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).

  • Method of and apparatus for separating gas mixture
    Patent number: 5104426
    Abstract: A gas mixture separating apparatus comprises an adsorption column packed with an adsorbent; a gas mixture column-end feeding device for feeding a gas mixture to one of two ends of the adsorption column; an unadsorbed-gas column-end discharge device for discharging unadsorbed gas from the other end of the adsorption column; a pressurizing device for pressurizing the gas mixture to be fed to the end of the adsorption column; and an adsorber depressurizing device connected to the end of the adsorption column on the gas mixture feed side. It comprises further a gas mixture side-injection device for feeding the gas mixture to the adsorbent in the adsorption column from the shell side thereof. Further, the gas mixture side-injection device is branched from the gas mixture column-end feeding device.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: April 14, 1992
    Assignees: Hitachi, Ltd., The Tokyo Electric Power Company, Incorporated
    Inventors: Ryokichi Yamada, Tetsuro Haga, Shuntaro Koyama, Akio Yamamoto, Naoya Iwama, Yasuo Funayama, Yuji Itakura