Patents by Inventor Michael C. Dadaias

Michael C. Dadaias 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).

  • Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant
    Patent number: 7294668
    Abstract: An aqueous non-melt processible polytetrafluoroethylene dispersion having non-melt processible polytetrafluoroethylene particles in an amount of 30 to 70% by weight and an amount of non-ionic surfactant between 2 and 15% by weight based on the weight of polytetrafluoroethylene solids. The dispersion is free of fluorinated surfactant or contains fluorinated surfactant in amounts of not more than 200 ppm based on the amount of polytetrafluoroethylene solids. At least part of the non-melt processible polytetrafluoroethylene particles comprise an effective amount of ionic end groups in the polytetrafluoroethylene polymer chains.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: November 13, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Tilman Zipplies, Klaus Hintzer, Michael C. Dadaias, Gernot Loehr