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. 26, 2023
Filed:
Apr. 06, 2023
Pixie Dust Technologies, Inc., Tokyo, JP;
Masaki Gomi, Tokyo, JP;
Yudai Taira, Tokyo, JP;
Pixie Dust Technologies, Inc., Tokyo, JP;
Abstract
A sound absorber includes cavities mutually different in at least one of shape and size. A wall of a first cavity included in the cavities includes a first region and a second region. Through-holes connecting an interior to an exterior of the first cavity is formed in the first region. No through-holes connecting the interior and the exterior of the first cavity is formed in the second region adjacent to the first region. A wall of a second cavity included in the cavities includes a third region and a fourth region. Through-holes connecting an interior to an exterior of the second cavity is formed in the third region. No through-holes connecting the interior and the exterior of the second cavity is formed in the fourth region adjacent to the third region. Size of through-holes in the first region is different from size of through-holes in the third region.