The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2018
Filed:
Jun. 13, 2014
L'air Liquide Societe Anonyme Pour L'etude ET L'exploitation Des Procedes Georges Claude, Paris, FR;
Association DE Gestion DE L'ecole Francaise DE Papeterie ET Des Industries Graphiques (Agefpi), Saint Martin d'Heres, FR;
Degremont France, Rueil Malmaison, FR;
Xylem Water Solutions Herford Gmbh, Herford, DE;
Arkema France, Colombes, FR;
L'Air Liquide Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Georges Claude, Paris, FR;
Association de Gestion De L'Ecole Francaise de Papeterie et des Industries Graphiques (AGEFPI), Saint Martin d'Heres, FR;
Degremont France, Rueil Malmaison, FR;
Xylem Water Solutions Herford GmbH, Herford, DE;
Arkema France, Colombes, FR;
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 (Mg).