Patents by Inventor Cyrille Schu

Cyrille Schu 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).

  • Method for fixing a mineral filler on cellulosic fibers and method for making a sheet of paper
    Patent number: 6706148
    Abstract: The invention relates to a method for affixing a mineral filler onto an aqueous cellulose-fiber suspension. In this invention, the method uses as its reaction medium an aqueous cellulose-fiber suspension which is derived from papermaking and which includes at least hydrogen carbonates, carbonates or silicates of alkali and/or earth alkali metals, and the invention adds to the reaction medium a hydroxide of the filler mineral in order to precipitate the mineral filler's carbonates or silicates onto the fibers. In particular, the invention applies to papermaking.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: March 16, 2004
    Assignee: Georgia-Pacific France
    Inventors: Didier Joisson, Christian Richard, Gilbert Schohn, Cyrille Schu