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. 07, 2020
Filed:
Oct. 13, 2017
Agc Inc., Chiyoda-ku, JP;
Hiroshi Aruga, Chiyoda-ku, JP;
AGC Inc., Chiyoda-ku, JP;
Abstract
There is provided a film usable as a lightweight sound absorbing film having an excellent sound absorbing property, and a sound absorbing structure with such a film. A filmincluding a plurality of fine through holesformed therein, the film having an average thickness t (μm) in portions of the film having no through holesformed therein, the through holes having an average depth T (μm) including a burr on a circumferential edge thereof, the through holeshaving an average hole diameter d (μm), and the filmhaving an open area rate y (%) per unit area; the film satisfying all of the following formulas:90≤≤300,1.02<≤1.5,0.7<<1.4, and0.5<<1.7.