Patents by Inventor David Frederick Lander

David Frederick Lander 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).

  • Adsorbents for separating nitrogen from a feed gas
    Patent number: 5993516
    Abstract: An adsorbent for separating nitrogen from a feed gas containing at least one other gas having molecular dimensions equal to or larger than methane, the adsorbent comprising clinoptilolite having a sodium ion content of at least 17 equivalent percent of the total ion exchangeable cations and optionally one or more non-univalent cations, which if present comprise in total less than 12 equivalent percent of the total ion exchangeable cations, the balance, if any, being one or more non-sodium univalent cations.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: November 30, 1999
    Assignee: BG plc
    Inventors: Michael Morris, Stuart Charles Frank Robinson, David Frederick Lander