Patents by Inventor Robert E. Scalfarotto

Robert E. Scalfarotto 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).

  • Dewatering of wet paper webs using Mannich acrylamide polymers
    Patent number: 4599139
    Abstract: Dewatering of wet paper webs in general and particularly under high vacuum is improved by the addition of a Mannich acrylamide polymer having a molecular weight of not greater than about 300,000 to an aqueous slurry of papermaking fibers having a pH less than about 5.5.
    Type: Grant
    Filed: March 26, 1984
    Date of Patent: July 8, 1986
    Assignee: American Cyanamid Company
    Inventor: Robert E. Scalfarotto