Patents by Inventor Isabelle Fietier

Isabelle Fietier 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).

  • Patent number: 5484843
    Abstract: Self-reversible, stable, water-in-oil dispersions, miscible with water, constituted by an oil phase, an aqueous phase and at least two emulsifying agents of which at least one is of water-in-oil type, and at least one is of oil-in-water type, which contain 20 to 50% by weight of a mixture constituted by a hydrosoluble anionic polymer belonging to the group of carboxymethylcelluloses (C), and by a cross-linked, synthetic anionic polymer, insoluble in water but water-swellable (P), based on acrylic acid (AA), partially salified with an alkali metal (M), optionally copolymerized with 2-acrylamido 2-methyl propanesulphonate of the alkali metal M (AMPSM), cross-linked with a diethylenic carboxylic acid and in which the molar ratio of the salified acid functions to the total number of free or salified acid functions is comprised between about 0.6 and about 0.9, the ratio by weight C/P+C being comprised between 0.01 and 0.4, preparation process and use for obtaining a printing paste.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: January 16, 1996
    Assignee: Societe Francaise Hoechst
    Inventors: Paul Mallo, Isabelle Fietier, Ulrich Karsunky