Patents by Inventor Laurence Ladouce

Laurence Ladouce 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).

  • Cellulose microfibrils with modified surface, preparation method and use thereof
    Patent number: 6703497
    Abstract: The invention concerns cellulose microfibrils with modified surface, characterised in that the hydroxyl functions present at the surface of the microfibrils are etherified with at least an organic compound comprising at least a function capable of reacting with said hydroxyl functions, and the degree of surface substitution (DSs) is at least 0.05. The invention also concerns a method for obtaining said microfibrils and their use as agent for modifying viscosity, texture and/or as reinforcing filler.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: March 9, 2004
    Assignee: Rhodia Chimie
    Inventors: Laurence Ladouce, Etienne Fleury, Cécile Gousse, Robert Cantiani, Henri Chanzy, Gérard Excoffier
  • Use of aluminum hydroxycarbonate, hydroxyoxycarbonate or oxycarbonate as filler in a rubber composition
    Patent number: 6512038
    Abstract: The invention concerns the use as filler in a rubber composition based on an elastomer, of a compound consisting of an amorphous aluminum hydroxycarbonate, hydroxyoxycarbonate or oxycarbonate. The invention also concerns rubber compositions comprising such a filler and finished products based on such a composition.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: January 28, 2003
    Assignee: Rhodia Chimie
    Inventors: Laurence Ladouce, Thierry Chopin, Pierre-Yves Le Goff, Michel Martin