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:
Feb. 14, 2017
Filed:
Dec. 21, 2012
Centre National DE LA Recherche Scientifique (C.n.r.s.), Paris, FR;
Université Paul Sabatier Toulouse Iii, Toulouse, FR;
Francois Martin, Sainte Foy d' Aigrefeuille, FR;
Pierre Micoud, Peyssies, FR;
Angela Dumas, Pechabou, FR;
Christophe Le Roux, Avignonet Lauragais, FR;
Emmanuel Gardes, Caen, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.), Paris, FR;
UNIVERSITE PAUL SABATIER TOULOUSE III, Toulouse, FR;
Abstract
A process for preparing a magnetic talcous composition including mineral particles, referred to as magnetic talcous particles, having a non-zero magnetic susceptibility, in which, during an oxidative contacting step, talcous particles chosen from the group formed from 2:1 lamellar silicates having a zero electric charge are brought into contact with particles including at least one magnetic iron oxide chosen from the group formed from magnetite and maghemite, the magnetic particles having a mean equivalent diameter of between 1 nm and 50 nm. A magnetic talcous composition including mineral particles, referred to as magnetic talcous particles, having a non-zero magnetic susceptibility, at least 20% by weight of talcous particles and at least 0.5% by weight of magnetic particles is also described.