Patents by Inventor Minish Mahendra Shah

Minish Mahendra Shah 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 system for producing carbon monoxide
    Patent number: 6192706
    Abstract: A system for producing carbon monoxide wherein a carbon monoxide containing feed stream is processed in a membrane separation unit for partial removal of carbon dioxide, cooled to complete the removal of carbon dioxide, and then processed in a cryogenic separation system comprising a first cryogenic separation column and a second cryogenic separation column for the production of product carbon monoxide.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: February 27, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Thomas John Bergman, Jr., John Fredric Billingham, Michael Robert Couche, Minish Mahendra Shah
  • Method and apparatus for the production of ammonia utilizing cryogenic rectification
    Patent number: 6190632
    Abstract: A system for producing ammonia by integrating blast furnace ironmaking with ammonia production wherein cryogenic rectification links the two systems enabling the production of ammonia synthesis gas from blast furnace gas for use in the ammonia production.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: February 20, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: Minish Mahendra Shah, Raymond Francis Drnevich
  • Nitrogen system for regenerating chemical solvent
    Patent number: 6174348
    Abstract: A system for regenerating chemical solvent loaded with acid gas with improved energy efficiency wherein the chemical solvent is partially flash vaporized, heated, and passed in countercurrent mass transfer contact with nitrogen gas.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: January 16, 2001
    Assignee: Praxair Technology, Inc.
    Inventors: M. Mushtaq Ahmed, Minish Mahendra Shah, Raymond Francis Drnevich
  • Cryogenic air separation system for producing moderate purity oxygen and moderate purity nitrogen
    Patent number: 6079223
    Abstract: A cryogenic air separation system wherein feed air is initially processed to produce a vapor and a liquid, the vapor is then processed in the rectifying section of a reflux condenser to produce moderate purity nitrogen, and the liquid is processed in the stripping section of the reflux condenser to produce moderate purity oxygen.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: June 27, 2000
    Assignee: Praxair Technology, Inc.
    Inventors: Vijayaraghavan Srinivasan, Minish Mahendra Shah, Andrew Chun-Pong Lau, Michael James Lockett
  • Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification
    Patent number: 6045602
    Abstract: A method for increasing iron production by integrating blast furnace ironmaking with direct reduction ironmaking wherein cryogenic rectification links the two systems and produces input materials for both.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: April 4, 2000
    Assignee: Praxair Technology, Inc.
    Inventors: Minish Mahendra Shah, Raymond Francis Drnevich
  • Annular column for cryogenic rectification
    Patent number: 6023945
    Abstract: An annular column, particularly useful for cryogenic rectification, comprising coaxially oriented, radially spaced cylindrical column walls defining a first column region, and a second column region between the walls, wherein different fluid mixtures are rectified in each of the first column and second column regions.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: February 15, 2000
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, John Frederic Billingham, Dante Patrick Bonaquist, Bayram Arman, Raymond Francis Drnevich, Minish Mahendra Shah, Todd Alan Skare
  • Annular column for cryogenic rectification
    Patent number: 5946942
    Abstract: An annular column, particularly useful for cryogenic rectification, comprising coaxially oriented, radially spaced cylindrical column walls defining a first column region, and a second column region between the walls, wherein different fluid mixtures are rectified in each of the first column and second column regions.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: September 7, 1999
    Assignee: Praxair Technology, Inc.
    Inventors: Kenneth Kai Wong, John Frederic Billingham, Dante Patrick Bonaquist, Bayram Arman, Raymond Francis Drnevich, Minish Mahendra Shah, Todd Alan Skare
  • Cryogenic rectification apparatus for producing high purity oxygen or low purity oxygen
    Patent number: 5881570
    Abstract: A cryogenic rectification plant comprising a double column and a side column having a bottom reboiler wherein feed air is passed into the double column by way of the bottom reboiler and an auxiliary compressor is connected in parallel with the feed air line.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: March 16, 1999
    Assignee: Praxair Technology, Inc.
    Inventors: Raymond Francis Drnevich, Ravindra Fulchand Pahade, Minish Mahendra Shah