Patents by Inventor Paula D'Nell Ario

Paula D'Nell Ario 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).

  • Radiopaque dental materials with nano-sized particles
    Patent number: 6387981
    Abstract: A dental material comprising a hardenable resin, a non-heavy metal oxide particle and a heavy metal oxide. The dental materials can be radiopaque, strong, translucent, or resistant to toothbrush abrasion, or combinations thereof.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: May 14, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Xiaodong Zhang, Brant Ulrick Kolb, Douglas Alan Hanggi, Sumita Basu Mitra, Paula D'Nell Ario, Richard Paul Rusin