Patents by Inventor James T. Shelton, deceased

James T. Shelton, deceased 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).

  • Ultra-high purity oxygen production
    Patent number: 5582032
    Abstract: A process for producing an ultra-high purity fluid product comprising the steps of collecting in the lower portion of a cryogenic fractionation zone an ultra-high purity fluid product; providing reboil to said fractionation zone by condensing a portion of a lesser purity composition of the same fluid product by indirect heat exchange in a first reboiler; and vaporizing said portion of said lesser purity composition by indirect heat exchange with a warmer stream of an impure fluid.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: December 10, 1996
    Assignee: Liquid Air Engineering Corporation
    Inventors: James T. Shelton, deceased, Bao Ha