Patents by Inventor John Earl Logsdon

John Earl Logsdon 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).

  • Patent number: 6362367
    Abstract: This invention relates to a process for producing one or more organic acids in high purity which process comprises (i) oxidizing in a liquid oxidation reactor one or more organic liquids with essentially pure oxygen or oxygen-enriched air containing at least about 50% oxygen, at a temperature sufficiently stable to prevent cycling of reaction rate, to produce a crude reaction product fluid, and (ii) refining said crude reaction product fluid to give said one or more organic acids in high purity. The oxidation temperature is preferably controlled to within about ±3° C. of a target temperature. The organic acids described herein is useful in a variety of applications, such as intermediates in the manufacture of chemical compounds, pharmaceutical manufacture and the like.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: March 26, 2002
    Assignee: Union Carbide Chemicals & Plastics Technology Corp.
    Inventors: John Braithwaite, David Robert Bryant, David James Miller, John Earl Logsdon
  • Publication number: 20020010364
    Abstract: This invention relates to a process for producing one or more organic acids in high purity which process comprises (i) oxidizing in a liquid oxidation reactor one or more organic liquids with essentially pure oxygen or oxygen-enriched air containing at least about 50% oxygen, at a temperature sufficiently stable to prevent cycling of reaction rate, to produce a crude reaction product fluid, and (ii) refining said crude reaction product fluid to give said one or more organic acids in high purity. The oxidation temperature is preferably controlled to within about ±3° C. of a target temperature. The organic acids described herein is useful in a variety of applications, such as intermediates in the manufacture of chemical compounds, pharmaceutical manufacture and the like.
    Type: Application
    Filed: April 21, 1998
    Publication date: January 24, 2002
    Inventors: JOHN BRAITHWAITE, DAVID ROBERT BRYANT, DAVID JAMES MILLER, JOHN EARL LOGSDON