Patents by Inventor Carl W. Hahn

Carl W. Hahn 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).

  • Polyether polyesters having anionic functionality
    Patent number: 7041707
    Abstract: Polyester compositions and methods of producing and using same are provided. The polyester compositions at least include an anionic diacid monomer or diester monomer thereof and a polyether. The polyester compositions of the present invention can be effectively utilized, for example, to treat crude oil during production and refinery processing.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: May 9, 2006
    Assignee: Nalco Company
    Inventor: Carl W. Hahn
  • Polyether polyesters having anionic functionality
    Publication number: 20040147407
    Abstract: Polyester compositions and methods of producing and using same are provided. The polyester compositions at least include an anionic diacid monomer or diester monomer thereof and a polyether. The polyester compositions of the present invention can be effectively utilized, for example, to treat crude oil during production and refinery processing.
    Type: Application
    Filed: January 24, 2003
    Publication date: July 29, 2004
    Inventor: Carl W. Hahn