Patents by Inventor Pierluigi Cassaghi

Pierluigi Cassaghi 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).

  • Process for the combined regeneration of soluble salts contained in a residue of an industrial process
    Patent number: 8906117
    Abstract: Process for the combined regeneration of at least two soluble salts contained in a residue of an industrial process comprising heavy metals, comprising: adding an amount of reactive aqueous solution needed to completely dissolve the salts which are desired to be regenerated to the residue; subjecting the resulting aqueous suspension to a separation to obtain an aqueous production solution on the one hand and insoluble impurities on the other hand, which are removed; successively subjected the aqueous production solution to at least two selective crystallization steps intended to crystallize, separately, the at least two soluble salts which are desired to be regenerated, which are washed, dried and regenerated separately; and adjusting the concentration of at least one of the soluble salts to be regenerated in the aqueous production solution, at the moment when such solution is subjected to the step of crystallization of this salt, to give rise to the selective crystallization of this salt, by addition of a co
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: December 9, 2014
    Assignee: Solvay SA
    Inventors: Jean-Marie Blondel, Pierluigi Cassaghi, Cedric Humblot
  • PROCESS FOR THE COMBINED REGENERATION OF SOLUBLE SALTS CONTAINED IN A RESIDUE OF AN INDUSTRIAL PROCESS
    Publication number: 20120205253
    Abstract: Process for the combined regeneration of at least two soluble salts contained in a residue of an industrial process comprising heavy metals, comprising: adding an amount of reactive aqueous solution needed to completely dissolve the salts which are desired to be regenerated to the residue; subjecting the resulting aqueous suspension to a separation to obtain an aqueous production solution on the one hand and insoluble impurities on the other hand, which are removed; successively subjected the aqueous production solution to at least two selective crystallization steps intended to crystallize, separately, the at least two soluble salts which are desired to be regenerated, which are washed, dried and regenerated separately; and adjusting the concentration of at least one of the soluble salts to be regenerated in the aqueous production solution, at the moment when such solution is subjected to the step of crystallization of this salt, to give rise to the selective crystallization of this salt, by addition of a co
    Type: Application
    Filed: October 20, 2010
    Publication date: August 16, 2012
    Applicant: SOLVAY SA
    Inventors: Jean-Marie Blondel, Pierluigi Cassaghi, Cedric Humblot