Patents by Inventor Francesco Malatesta

Francesco Malatesta 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).

  • Process for sizing paper and similar products
    Patent number: 5114538
    Abstract: Sizing compounds particularly cyclic acid anhydrides are used as such or in solution with non-aqueous protic and/or protic solvents to mass-size cellulose products such as paper, board, cardboard and similar cellulose and synthetic fibre products. In a preferred embodiment, the cyclic acid anhydrides or their solutions in inert solvents are introduced into the wet-end of the paper machine at a position where the paper slurry is in a highly turbulent state so that they are immediately homogenized and reacted with the cellulose stock.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: May 19, 1992
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Francesco Malatesta