Patents by Inventor Marcel de Vreede

Marcel de Vreede 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: 7692037
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: April 6, 2010
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Marcel de Vreede, Lee Reynolds Partin, Wayne Scott Strasser
  • Patent number: 7692036
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: April 6, 2010
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Robert Lin, Lee Reynolds Partin, Marcel de Vreede, Wayne Scott Strasser
  • Patent number: 7659427
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: February 9, 2010
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Wayne Scott Strasser, Marcel de Vreede, J. Thomas Tidwell
  • Publication number: 20090317306
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Application
    Filed: August 27, 2009
    Publication date: December 24, 2009
    Applicant: Eastman Chemical Company
    Inventors: Alan George Wonders, Howard Wood Jenkins, Jr., Lee Reynolds Partin, Wayne Scott Strasser, Marcel de Vreede
  • Patent number: 7608733
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: October 27, 2009
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Howard Wood Jenkins, Jr., Lee Reynolds Partin, Wayne Scott Strasser, Marcel de Vreede
  • Patent number: 7608732
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: October 27, 2009
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Gino Georges Lavoie, Charles Edwan Sumner, Jr., Bryan Wayne Davenport, Marcel de Vreede, Brent Alan Tennant
  • Publication number: 20090257930
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Application
    Filed: June 24, 2009
    Publication date: October 15, 2009
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Alan George Wonders, Lee Reynolds Partin, Wayne Scott Strasser, Marcel de Vreede
  • Patent number: 7589231
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: September 15, 2009
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Howard Wood Jenkins, Jr., Lee Reynolds Partin, Wayne Scott Strasser, Marcel de Vreede
  • Patent number: 7572932
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: August 11, 2009
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Lee Reynolds Partin, Wayne Scott Strasser, Marcel de Vreede
  • Patent number: 7572936
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: August 11, 2009
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Lee Reynolds Partin, Wayne Scott Strasser, Marcel de Vreede
  • Patent number: 7568361
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: August 4, 2009
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Robert Lin, Marcel de Vreede, Lee Reynolds Partin
  • Patent number: 7563926
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: July 21, 2009
    Assignee: Eastman Chemical Company
    Inventors: Marcel de Vreede, Lee Reynolds Partin, Wayne Scott Strasser
  • Patent number: 7556784
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically producing aromatic discarboxylic acids. The process reduces costs associated with hydrogenation by forming a final composite product containing unhydrogenated acid particles.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: July 7, 2009
    Assignee: Eastman Chemical Company
    Inventors: Robert Lin, Marcel de Vreede
  • Publication number: 20090155143
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Application
    Filed: February 25, 2009
    Publication date: June 18, 2009
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Alan George Wonders, Robert Lin, Marcel de Vreede, Lee Reynolds Partin
  • Publication number: 20090136397
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Application
    Filed: January 30, 2009
    Publication date: May 28, 2009
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: Marcel De Vreede, Alan George Wonders, Robert Lin
  • Patent number: 7507857
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: March 24, 2009
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Lee Reynolds Partin, Wayne Scott Strasser, Marcel de Vreede, Puneet Gupta
  • Patent number: 7504535
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: March 17, 2009
    Assignee: Eastman Chemical Company
    Inventors: Marcel de Vreede, Alan George Wonders, Robert Lin
  • Patent number: 7501537
    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: Grant
    Filed: March 1, 2006
    Date of Patent: March 10, 2009
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Ronald Buford Sheppard, Martin De Boer, Raymond Elbert Fogle, Marcel de Vreede
  • Patent number: 7494641
    Abstract: Disclosed is a process that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic acid. The process involves the addition of a wash solution to a high temperature molten dispersion to recover the metal catalyst and then subjecting an aqueous mixture or purified aqueous mixture so formed to a single stage extraction to remove organic impurities to produce an extract stream and a raffinate stream comprising the metal catalyst.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: February 24, 2009
    Assignee: Eastman Chemical Company
    Inventors: Robert Lin, Marcel de Vreede
  • Patent number: 7495125
    Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: February 24, 2009
    Assignee: Eastman Chemical Company
    Inventors: Alan George Wonders, Lee Reynolds Partin, Wayne Scott Strasser, Marcel de Vreede