Patents by Inventor Susan Marie Sattan

Susan Marie Sattan 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 system with intermediate third column reboil
    Patent number: 5873264
    Abstract: A cryogenic rectification system for producing lower purity oxygen comprising a double column with a third column reboiled by feed air at an intermediate level and, optionally, in a staged manner at the bottom level.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: February 23, 1999
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Susan Marie Sattan
  • High pressure, improved efficiency cryogenic rectification system for low purity oxygen production
    Patent number: 5839296
    Abstract: An improved efficiency system for producing low purity oxygen by rectification of air employs a high pressure column and a low pressure column and includes the steps of: turboexpanding a flow of nitrogen-rich gas from the high pressure column to provide a cooled nitrogen-rich gas flow; condensing the cooled nitrogen-rich gas flow to a nitrogen-rich liquid against a flow of a vaporizing oxygen-rich liquid flow taken from the low pressure column; passing the nitrogen-rich liquid as a reflux flow to the low pressure column; returning the vaporizing oxygen liquid to the low pressure column; and employing energy derived from the turboexpanding step to compress feed air.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: November 24, 1998
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Susan Marie Sattan
  • Cryogenic rectification system for producing low purity oxygen and high purity oxygen
    Patent number: 5806342
    Abstract: A cryogenic rectification system for producing low purity oxygen and high purity oxygen employing an offset dual column with bottom reboil of the lower pressure column effected by condensing feed air, with intermediate reboil of the lower pressure column effected by condensing higher pressure column top vapor, and with waste nitrogen turboexpansion to generate refrigeration.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: September 15, 1998
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Nancy Jean Lynch, Susan Marie Sattan, James Richard Handley
  • Cryogenic rectification system for producing low purity oxygen and high purity nitrogen
    Patent number: 5678427
    Abstract: A double column cryogenic rectification system for producing low purity oxygen and high purity nitrogen, preferably at elevated pressure, wherein nitrogen-rich vapor from the higher pressure column is turboexpanded and condensed against lower pressure column intermediate liquid prior to being passed into the lower pressure column.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: October 21, 1997
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Susan Marie Sattan
  • Cryogenic side column rectification system for producing low purity oxygen and high purity nitrogen
    Patent number: 5664438
    Abstract: A cryogenic rectification system for producing low purity oxygen and high purity nitrogen, preferably at elevated pressure, wherein nitrogen-rich vapor from a higher pressure column is turboexpanded and condensed against lower pressure column intermediate liquid prior to being passed into the lower pressure column and low purity oxygen is produced in an auxiliary side column driven by fluid from the higher pressure column.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: September 9, 1997
    Assignee: Praxair Technology, Inc.
    Inventors: Dante Patrick Bonaquist, Susan Marie Sattan