Patents by Inventor Catharine S. Paige

Catharine S. Paige 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 manufacture
    Patent number: 5697228
    Abstract: A method of manufacturing a breathable, life-supporting cryogenic liquid mixture including the steps of: producing a stream of treated natural air having substantially all the carbon dioxide and moisture removed therefrom; admixing a quantity of mixing gas containing nitrogen in a proportion greater than natural air thereby to producing a product gas mixture having a desired oxygen/nitrogen ratio and liquefying this said mixture in a heat exchanger against a suitable chilling fluid.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: December 16, 1997
    Assignee: The BOC Group plc
    Inventor: Catharine S. Paige