Patents by Inventor Jean-Christophe Hostachy

Jean-Christophe Hostachy 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).

  • Method for bleaching chemical paper pulps by final ozone treatment at high temperature
    Patent number: 8268120
    Abstract: A method for treating a prebleached chemical pulp including a step of ozone treatment of the pulp, carried out at a temperature above 60° C., advantageously above 65° C. and even more advantageously above or equal to 70° C.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: September 18, 2012
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Guillaume Pipon, Dominique Lachenal, Christine Chirat, Jean-Christophe Hostachy, Achim Ried
  • METHOD FOR MANUFACTURING PAPERMAKING PULP
    Publication number: 20120118518
    Abstract: The invention relates to a method for manufacturing papermaking pulp, including: a step of refining wood, including an ozone treatment, so as to obtain a mechanical pulp; a deacidification step including placing the mechanical pulp in contact with a deacidification composition including at least one alkaline agent for more than one hour; and a bleaching step including placing the deacidified pulp in contact with a bleaching composition; wherein the pH varies by less than 0.2 point during the last 30 minutes of the deacidification step, and the pH is 6. to 10 at the end of the deacidification step.
    Type: Application
    Filed: October 23, 2009
    Publication date: May 17, 2012
    Inventors: Christophe Calais, Jean-Christophe Hostachy
  • METHOD FOR BLEACHING CHEMICAL PAPER PULPS BY FINAL OZONE TREATMENT AT HIGH TEMPERATURE
    Publication number: 20100065233
    Abstract: A method for treating a prebleached chemical pulp including a step of ozone treatment of the pulp, carried out at a temperature above 60° C., advantageously above 65° C. and even more advantageously above or equal to 70° C.
    Type: Application
    Filed: December 11, 2007
    Publication date: March 18, 2010
    Applicant: ITT MANUFACTURING ENTERPRISES, INC.
    Inventors: Guillaume Pipon, Dominique Lachenal, Christine Chirat, Jean-Christophe Hostachy, Achim Ried