Patents by Inventor Cyril Boitelle

Cyril Boitelle 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).

  • Production of precipitated silica
    Patent number: 8454919
    Abstract: Precipitated silica is produced by a process that includes a step for filtering and washing an aqueous suspension (S), comprising the following steps: (a) filtering a first portion (S1) of a precipitated silica suspension (S), whereby a cake (G1) is formed and said cake (G1) is then washed and a suspension (S?1) is formed by suspending the thereby obtained washed cake (G1), notably by dilution with water; (b) filtering a second portion (S2) of the suspension (S), whereby a cake (G2) is obtained; and (c) filtering said suspension (S?1) emanating from step (a) through the cake (G2) obtained at the end of step (b), employed as a filtration precoating layer.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: June 4, 2013
    Assignee: Rhodia Operations
    Inventors: Zied Soua, Cyril Boitelle
  • PRODUCTION OF PRECIPITATED SILICA
    Publication number: 20110176985
    Abstract: Precipitated silica is produced by a process that includes a step for filtering and washing an aqueous suspension (S), comprising the following steps: (a) filtering a first portion (S1) of a precipitated silica suspension (S), whereby a cake (G1) is formed and said cake (G1) is then washed and a suspension (S?1) is formed by suspending the thereby obtained washed cake (G1), notably by dilution with water; (b) filtering a second portion (S2) of the suspension (S), whereby a cake (G2) is obtained; and (c) filtering said suspension (S?1) emanating from step (a) through the cake (G2) obtained at the end of step (b), employed as a filtration precoating layer.
    Type: Application
    Filed: April 24, 2009
    Publication date: July 21, 2011
    Inventors: Zied Soua, Cyril Boitelle