Patents by Inventor Arthur W. Nelson

Arthur W. Nelson 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).

  • Once-through steam generator
    Patent number: 4474011
    Abstract: An evaporator for producing wet steam in a cogeneration plant wherein the evaporator is a multiple pass unit having continuous in-tube flow paths from inlet to outlet. The evaporator is a shell and tube type with the clean steam on the shell side and water in the tubes. The evaporator is particularly useful in a cogeneration plant used in a secondary recovery process using contaminated wet steam.
    Type: Grant
    Filed: May 12, 1983
    Date of Patent: October 2, 1984
    Assignee: Shell California Production Inc.
    Inventors: Arthur W. Nelson, James H. Ragland