Patents by Inventor Mary Beth Donovan

Mary Beth Donovan 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).

  • Nonwoven abrasive articles and methods
    Patent number: 6352567
    Abstract: Described are abrasive articles comprising a nonwoven; a binder layer contacting the nonwoven and at least partially filling spaces between fibers of the nonwoven; first abrasive particles adhered to the binder layer; a slurry layer comprising a second binder and second abrasive particles, the slurry layer contacting the nonwoven and the first layer and at least partially filling spaces within the fibers of the nonwoven; and, methods of preparation of such articles.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: March 5, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Laurie A. Windisch, Mary Beth Donovan, Loc X. Van, Gary T. Stram