Patents by Inventor Abbas Al-Saigh

Abbas Al-Saigh 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 for removing spent catalyst from a reactor tower and assembly for facilitating same
    Patent number: 4642223
    Abstract: A basket is removably inserted in the upper end of each drain tube in those interbed assemblies of a catalytic tower whose catalyst beds are to be removed upwardly by vacuuming. The basket has a grid for a bottom wall, so that catalyst particles thereabove are retained but fluid being treated in the tower can easily pass therethrough. The provision of the baskets makes it possible to downwardly drain spent catalyst from the lower bed sections while simultaneously vacuuming it upwardly from the upper bed sections.
    Type: Grant
    Filed: April 2, 1985
    Date of Patent: February 10, 1987
    Assignees: Alberta Energy Company Ltd., Canadian Ocidental Petroleum Ltd., Esso Resources Canada Limited, Gulf Canada Limited, Her Majesty the Queen in right of the Province of Alberta Canada, as represented by the Minister of Energy and Natural Resources, HBOG-Oil Sands Limited Partnership, PanCanadian Petroleum Limited, Petro-Canada Inc.
    Inventor: Abbas Al-Saigh