Patents by Inventor John Fredric Billingham

John Fredric Billingham 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).

  • Liquid distributor for packed columns
    Patent number: 5752538
    Abstract: A baffle which extends over the cross section of a liquid-vapor contacting column and is suspended above a distributor floor. The baffle, having an open space, converges and mixes liquid flow falling from a liquid-vapor contacting zone above, before dispersing it to the distributor below. The open space of the baffle, may also be fitted with a mixing device for further enhancement of liquid mixing.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: May 19, 1998
    Assignee: Praxair Technology, Inc.
    Inventors: John Fredric Billingham, Michael James Lockett, Damian Uzoma Ogbonna
  • Cryogenic rectification regenerator system
    Patent number: 5740683
    Abstract: A cryogenic rectification system for producing nitrogen, especially at low production flowrates, wherein incoming feed air is cooled by a regenerator without need for cold end imbalance and wherein exogenous cryogenic liquid is added to the rectification column.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: April 21, 1998
    Assignee: Praxair Technology, Inc.
    Inventors: John Fredric Billingham, Thomas John Bergman, Jr.
  • Distillation column employing structured packing which reduces wall flow
    Patent number: 5700403
    Abstract: A heat and/or mass exchange structure which includes a shell having an outer vertical wall with an interior surface, a plurality of first corrugated packing sheets having an outer edge that is spaced away from the interior surface of the shell, and a plurality of second corrugated packing sheets positioned within the shell and sandwiched between a pair of the first corrugated packing sheets.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: December 23, 1997
    Assignee: Praxair Technology, Inc.
    Inventors: John Fredric Billingham, Michael James Lockett
  • Cryogenic rectification system for producing low purity oxygen and high purity oxygen
    Patent number: 5669236
    Abstract: A cryogenic rectification system employing an additional rectifying section in parallel with the lower section of the lower pressure column of a double column for producing product oxygen at both low and high purity.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: September 23, 1997
    Assignee: Praxair Technology, Inc.
    Inventors: John Fredric Billingham, Michael James Lockett, Dante Patrick Bonaquist