Patents by Inventor Elsa R. Kellberg

Elsa R. Kellberg 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).

  • Synthetic crystalline zeolite and process for preparing same
    Patent number: 4241036
    Abstract: A new three-dimensional crystalline zeolite having unique adsorptive properties is prepared hydrothermally from a reaction gel containing tetramethylammonium hydroxide in addition to a source of silica and alumina and sodium hydroxide. The zeolite as crystallized from the reaction system contains tetramethylammonium cations in addition to sodium cations. The zeolite is denominated zeolite .OMEGA..
    Type: Grant
    Filed: October 23, 1975
    Date of Patent: December 23, 1980
    Assignee: Union Carbide Corporation
    Inventors: Edith Flanigen, Elsa R. Kellberg