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:
Jul. 08, 2025
Filed:
Feb. 03, 2021
Authentic Material, Toulouse, FR;
Institut National Polytechnique DE Toulouse, Toulouse, FR;
Institut National DE Recherche Pour L'agriculture, L'alimentation ET L'environnem, Paris, FR;
Margaux Jumeaux, Toulouse, FR;
Paul Verniolle, Toulouse, FR;
Antoine Rouilly, Toulouse, FR;
Virginie Vandenbossche, Sainte-Foy-d'Aigrefeuille, FR;
AUTHENTIC MATERIAL, Toulouse, FR;
INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE, Toulouse, FR;
INSTITUT NATIONAL DE RECHERCHE POUR L'AGRICULTURE, L'ALIMENTATION ET L'ENVIRONNMENT, Paris, FR;
Abstract
A process for preparing a powder of a material of natural origin, which includes a step of treating a substance containing at least 70% by weight of one or more leather wastes in particle form in a twin-screw extruder, wherein a temperature profile is applied that increases from an initial temperature of between 10 and 40° C. up to a maximum temperature of between 60 and 120° C., in the presence of water in an amount such that the weight ratio of water to substance is between 0.20 and 6.