Patents by Inventor David MacEwen

David MacEwen 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).

  • Stainblocker polymers
    Publication number: 20060248655
    Abstract: Disclosed herein is a composition of matter comprising salts of methylene bridged mixed sulfonated diphenyl oxides and methods of making and using the same.
    Type: Application
    Filed: March 12, 2004
    Publication date: November 9, 2006
    Inventors: James Lambert, David MacEwen, Lynn Hosie, Robert Barile