Patents by Inventor Malika Clouin

Malika Clouin 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).

  • Precipitated silica production process
    Patent number: 9938154
    Abstract: A precipitated silica production process that includes a precipitation reaction between a silicate and an acid is described, in which the acid used in at least one of the steps of the process is a concentrated acid.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: April 10, 2018
    Assignee: Rhodia Operations
    Inventors: Malika Clouin, Sylvaine Neveu, Joël Racinoux
  • Process for preparing precipitated silicas
    Patent number: 9725325
    Abstract: A process for preparing precipitated silica comprising a precipitation reaction between silicate and an acid, in which the acid used in at least one of the steps is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: August 8, 2017
    Assignee: Rhodia Operations
    Inventors: Malika Clouin, Sylvaine Neveu, Joël Racinoux
  • Process for preparing precipitated silicas
    Patent number: 9550682
    Abstract: A silica production method comprising reacting a silicate with at least one acid, in which the acid used in at least one of the steps of the production method is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: January 24, 2017
    Assignee: Rhodia Operations
    Inventors: Malika Clouin, Sylvaine Neveu
  • PRECIPITATED-SILICA PRODUCTION METHOD
    Publication number: 20150266742
    Abstract: A silica production method comprising reacting a silicate with at least one acid, in which the acid used in at least one of the steps of the production method is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.
    Type: Application
    Filed: December 19, 2012
    Publication date: September 24, 2015
    Inventors: Malika Clouin, Sylvaine Neveu
  • Process for preparing precipitated silicas
    Publication number: 20150210555
    Abstract: A process for preparing precipitated silica comprising a precipitation reaction between silicate and an acid, in which the acid used in at least one of the steps is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.
    Type: Application
    Filed: December 19, 2012
    Publication date: July 30, 2015
    Applicant: RHODIA OPERATIONS
    Inventors: Malika Clouin, Sylvaine Neveu, Joël Racinoux
  • NOVEL PRECIPITATED SILICA PRODUCTION PROCESS
    Publication number: 20130171051
    Abstract: A precipitated silica production process that includes a precipitation reaction between a silicate and an acid is described, in which the acid used in at least one of the steps of the process is a concentrated acid.
    Type: Application
    Filed: July 25, 2010
    Publication date: July 4, 2013
    Applicant: RHODIA OPERATIONS
    Inventors: Malika Clouin, Sylvaine Neveu, Joël Racinoux