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:
Apr. 21, 2009
Filed:
Nov. 19, 2004
Alain Dravet, Chevilly la Rue, FR;
Georges Riou, Melun, FR;
Jacques Julliard, Hericy sur Seine, FR;
Osmin Delverdier, Saint Jean Lherm, FR;
Philippe Vie, Toulouse, FR;
Alain Dravet, Chevilly la Rue, FR;
Georges Riou, Melun, FR;
Jacques Julliard, Hericy sur Seine, FR;
Osmin Delverdier, Saint Jean Lherm, FR;
Philippe Vie, Toulouse, FR;
Abstract
A soundproofing panel having a core sandwiched between a solid wall and a porous wall. The core being connected to the walls and having partitions extending in the thickness direction between the two walls so as to form cells. Each cell containing at least one sound energy dissipating layer constituted by hollow spherical beads having mutually contacting walls that are porous and micro-perforated, and being held in position in the thickness direction between the two walls by nets that are secured to the partitions.