Patents by Inventor Susan Di Donato

Susan Di Donato 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).

  • Synergistic filler blends for wood-containing papers
    Patent number: 5207822
    Abstract: A high opacity, high light scattering filler pigment for use in wood-containing paper manufacture, comprising by weight 25 to 50% of a fine particle size hydrous kaolin which has been defined as to have particle size distribution such that less than 20% by weight are of less than 0.3 .mu.m E.S.D. and substantially the balance being a fine particle size calcined kaolin.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: May 4, 1993
    Assignee: ECC International Inc.
    Inventors: John A. Manasso, Kenneth Mueller, Susan Di Donato