Patents by Inventor Mary J. Walzak

Mary J. Walzak 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).

  • Plasma assisted grafting of maleic anhydride to polyolefins
    Patent number: 5612097
    Abstract: A method for grafting maleic anhydride groups to the surface of polyolefins s described. The method uses an excited inert gas phase species in contact with the polyolefin and solid maleic anhydride. The surface functionality is identified by X-ray photoelectron spectroscopy and transmission Fourier transform infrared spectroscopy. The modified polyolefin has an increased ability to form a thermal bond with metals, including aluminum.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: March 18, 1997
    Assignees: The University of Western Ontario, in trust for Surface Science Western, The University of Western Ontario, The Institute For Chemical Science and Technology
    Inventors: Renate Foerch, Duncan H. Hunter, Mary J. Walzak, Blair A. Graham