Patents by Inventor Frédéric Pouyet

Frédéric Pouyet 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 OF PRODUCING HOLOCELLULOSE AND PAPER STRENGTH AGENT, PROCESS FOR THE PRODUCTION OF PAPER, THE PAPER PRODUCED AND USE OF THE PRODUCED PAPER
    Publication number: 20220018065
    Abstract: The present invention relates to a method of producing holocellulose fibres by treating a wood-based raw material with an organic peroxide, wherein the method comprises charging the organic peroxide continuously to the wood-based raw material during the treatment and/or charging the organic peroxide to the wood-based raw material in at least two separate steps with an intermediate alkaline treatment step. Additionally, a process for the production of paper comprising the steps of preparing a papermaking stock comprising an aqueous pulp slurry comprising cellulosic fibres and having a fibre consistency of from 0.1 to 40% by weight, wherein the cellulosic fibres comprise or consist of holocellulose fibres, and wherein the amount of the wood-based holocellulose fibres is from 0.5 to 100% by weight, based on the total weight of the stock; providing the stock to a wire and form a web; dewatering the web; and drying the web is claimed.
    Type: Application
    Filed: November 15, 2019
    Publication date: January 20, 2022
    Inventors: Paul KROCHAK, Klas JOHANSSON, Fredrik BERTHOLD, Eric JOHANSSON SALAZAR-SANDOVAL, Erika TÖNNERFORS, Frédéric POUYET
  • Method for treating chemical pulps by treatment with ozone in the presence of magnesium ions
    Patent number: 10006168
    Abstract: This invention relates to a method for treating chemical paper pulp comprising a step of treating the pulp with ozone followed by a step of alkaline extraction, in which alkaline extraction takes place in the presence of magnesium ions (Mg2+).
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: June 26, 2018
    Assignees: L'Air Liquide Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Georges Claude, Association de Gestion De L'Ecole Francaise de Papeterie et des Industries Graphiques (AGEFPI), Degremont France, Xylem Water Solutions Herford GmbH, Arkema France
    Inventors: Frederic Pouyet, Dominique Lachenal, Christine Chirat
  • METHOD FOR TREATING CHEMICAL PULPS BY TREATMENT WITH OZONE IN THE PRESENCE OF MAGNESIUM IONS
    Publication number: 20160130751
    Abstract: This invention relates to a method for treating chemical paper pulp comprising a step of treating the pulp with ozone followed by a step of alkaline extraction, in which alkaline extraction takes place in the presence of magnesium ions (Mg2+).
    Type: Application
    Filed: June 13, 2014
    Publication date: May 12, 2016
    Applicants: L'Air Liquid Societe Anonyme pour L'Etude et Explo itation des Procedes Georges Claude, Association de Gestion de L'Ecole Francaise de Papeterie et des Industries Graphiques (AGEFPI), Degremont France, Xylem Water Solutions Herford GmbH, Arkema France
    Inventors: Frédéric Pouyet, Dominique Lachenal, Christine Chirat