Patents by Inventor Derek W. Reay

Derek W. Reay 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).

  • Apparatus for mixing vapor in a countercurrent column
    Patent number: 5145612
    Abstract: The efficiency of mixing vapor in a countercurrent column (1) is improved by use of one or more vapor risers (6) each incorporating a mixing device (7). The method is suitable for use in countercurrent columns operating at high pressures or under vacuum. For high pressure operation a single riser is preferred positioned in the center of the distributor tray (5).
    Type: Grant
    Filed: May 21, 1991
    Date of Patent: September 8, 1992
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Derek W. Reay, Stuart Fraser, Richard G. Heddle