Patents by Inventor Ravindra F. Phade

Ravindra F. Phade 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).

  • Cryogenic rectification process for separating nitrogen and methane
    Patent number: 4878932
    Abstract: A cryogenic rectification process for the separation of nitrogen and methane wherein feed is preseparated in a high pressure column or phase separator into vapor and liquid portions, the vapor is condensed and at least partly employed as reflux for a main column, the liquid is passed into the main column at an intermediate point, and a portion of the liquid is vaporized against itself to provide additional column vapor upflow.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: November 7, 1989
    Assignee: Union Carbide Corporation
    Inventors: Ravindra F. Phade, James R. Handley