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:
Dec. 22, 2020
Filed:
Aug. 26, 2019
Soprema, Strasbourg, FR;
SOPREMA, Strasbourg, FR;
Abstract
One subject of the present invention is a roofing device () comprising an area support () made up of panels of wood particles on which a vapor barrier first layer (), an insulating second layer () and a third layer () that is impermeable to liquid water are laid. Said device () is one wherein the second layer () is a composite layer formed by the superposition of two distinct homogeneous elementary layers (and'), namely a lower elementary layer () of wood fiber and an upper elementary layer (′) made up of a material that is at least partially bio-sourced, that has hygroscopic, antifungal and thermal-insulation properties and that has a low resistance to the diffusion of water vapor.