Patents by Inventor Raymond Fogle

Raymond Fogle 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).

  • Polycarboxylic acid production system employing enhanced multistage oxidative digestion
    Publication number: 20070208191
    Abstract: Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system includes a multi-stage oxidative digestion system for processing an improved initial slurry from primary oxidation. The multi-stage digestion system is capable of adequately purifying the improved initial slurry without requiring significant liquor exchange between primary oxidation and oxidative digestion.
    Type: Application
    Filed: March 1, 2006
    Publication date: September 6, 2007
    Inventors: Alan Wonders, Ronald Sheppard, Thomas Woodruff, Martin De Boer, Raymond Fogle
  • Polycarboxylic acid production system employing cooled mother liquor from oxidative digestion as feed to impurity purge system
    Publication number: 20070208193
    Abstract: Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. A solvent purification system is employed to remove of at least one aromatic impurity present in a solvent purification feed. At least about 20 weight percent of the solvent purification feed originates from a cooled, post-digestion, TPA-containing slurry.
    Type: Application
    Filed: March 1, 2006
    Publication date: September 6, 2007
    Inventors: Alan Wonders, Ronald Sheppard, Martin De Boer, Lee Partin, Raymond Fogle
  • Polycarboxylic acid production system employing oxidative digestion with reduced or eliminated upstream liquor exchange
    Publication number: 20070208190
    Abstract: Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system minimizes or eliminates the need for liquor exchange upstream of oxidative digestion and/or upstream of substantial cooling of the TPA-containing slurry.
    Type: Application
    Filed: March 1, 2006
    Publication date: September 6, 2007
    Inventors: Alan Wonders, Ronald Sheppard, Martin De Boer, Raymond Fogle, Marcel de Vreede