Patents by Inventor James Richard Cavall

James Richard Cavall 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).

  • Processes for recovering oligomers of glycols and polymerization catalysts from waste streams
    Publication number: 20040211729
    Abstract: Processes for recovering oligomers and polymerization catalyst from aqueous waste streams generated during the production of polyalkylene ether glycols are provided. The processes utilize membranes, preferably reverse osmosis or nanofilter membranes. The processes can reduce waste and costs associated with the polymerization of polyalkylene ether glycols by recovery and recycling of glycols and catalysts.
    Type: Application
    Filed: April 25, 2003
    Publication date: October 28, 2004
    Inventors: Hari Babu Sunkara, James Richard Cavall, William Wayne Goudie