Patents by Inventor Keith L. Vogel

Keith L. Vogel 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 temporary closing and reopening of a reactor tube
    Patent number: 7491368
    Abstract: A method for deliberately plugging the inlet and outlet ends of a reactor tube in a recoverable manner, which method employs at least one vented plug whereby fluid communication within the tube can be established or terminated at will, and the tube is unplugged only after the fluid content of the tube has been drained through the vented plug.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: February 17, 2009
    Assignee: Equistar Chemicals, LP
    Inventors: Keith L. Vogel, Michael A. Middleton