Patents by Inventor Suresh U. Patel

Suresh U. Patel 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).

  • Tonnage nitrogen air separation with side reboiler condenser
    Patent number: 4617036
    Abstract: A cryogenic distillative separation of air to recover nitrogen in large quantities and at relatively high pressure wherein a portion of the nitrogen reflux for the distillation is achieved by heat exchanging nitrogen gas in a side reboiler against waste oxygen at reduced pressure.
    Type: Grant
    Filed: October 29, 1985
    Date of Patent: October 14, 1986
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Shyam R. Suchdeo, Suresh U. Patel, Christopher F. Harris
  • Nitrogen generator cycle
    Patent number: 4400188
    Abstract: A process is described in which gaseous nitrogen is recovered from air in a cryogenic air separation unit containing a single distillation column wherein the product nitrogen is compressed and a portion of the compressed nitrogen is recycled to the column to provide reboil in the bottom of said column and reflux at the top of said column. A waste crude oxygen stream is expanded to provide refrigeration for the air separation unit.
    Type: Grant
    Filed: October 27, 1981
    Date of Patent: August 23, 1983
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Suresh U. Patel, Thomas E. Cormier, Keith B. Wilson