Patents by Inventor James Edward MacDougall

James Edward MacDougall 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).

  • Gas separation with lithium-containing ZSM-2 metallosilicates
    Patent number: 5779766
    Abstract: The present invention is a method of selective adsorptively separating nitrogen from oxygen using a crystalline metallosilicate having a ZSM-2 structure with a Si/Al ratio less than 2.0 and a lithium cation exchange of at least 50%, wherein the composition has the chemical formula:M.sub.2/n O:X.sub.2 O.sub.3 :(2.0 to <4.0)SiO.sub.2wherein M=one or more metal cations having a valence of n, and X is selected from the group consisting of aluminum, gallium and boron, preferably aluminum. The method is conducted at a bed temperature in the range of approximately -100.degree. C. to 100.degree. C.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: July 14, 1998
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Scott Jeffrey Weigel, James Edward MacDougall, Charles Gardner Coe, Yan Liang Xiong, Johan Adriaan Martens, Pierre A. Jacobs, Paul Anthony Webley