Patents by Inventor Johannes Wilhelmus Sluijmers

Johannes Wilhelmus Sluijmers 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).

  • Process to produce an enrichment feed
    Patent number: 7897809
    Abstract: A process is provided for producing an enriched carboxylic acid compositions produced by contacting composition comprising a carboxylic acid with an enrichment feed in an enrichment zone to form an enriched carboxylic acid composition. This invention also relates to a process and the resulting compositions for removing catalyst from a carboxylic acid composition to produce a post catalyst removal composition.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: March 1, 2011
    Assignee: Eastman Chemical Company
    Inventors: Johannes Wilhelmus Sluijmers, Kenny Randolph Parker, Philip Edward Gibson, Marcel de Vreede, Ardie Heijblom
  • Method for oxidizing a slurry composition in a post oxidation zone in the presence of added steam
    Patent number: 7342128
    Abstract: The present invention relates to a process for oxidizing a slurry composition in a post oxidation zone in the presence of added steam. More specifically, the present invention relates to a process for oxidizing a crude terephthalic acid composition in a post oxidation zone in the presence of added steam in a process for the production of a crystallized post oxidation composition.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: March 11, 2008
    Assignee: Eastman Chemical Company
    Inventors: Robert Lin, Marcel de Vreede, Johannes Wilhelmus Sluijmers, Martin De Boer, Thomas Earl Woodruff