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:
Nov. 08, 2022
Filed:
Dec. 03, 2019
Masahiro Ishida, Kanagawa, JP;
Naoki Matsuda, Kanagawa, JP;
Hiroshi Ishii, Kanagawa, JP;
Kohta Takenaka, Kanagawa, JP;
Keisuke Shimizu, Tokyo, JP;
Shogo Sakamoto, Kanagawa, JP;
Takayuki Isaka, Kanagawa, JP;
Masahiro Ishida, Kanagawa, JP;
Naoki Matsuda, Kanagawa, JP;
Hiroshi Ishii, Kanagawa, JP;
Kohta Takenaka, Kanagawa, JP;
Keisuke Shimizu, Tokyo, JP;
Shogo Sakamoto, Kanagawa, JP;
Takayuki Isaka, Kanagawa, JP;
Ricoh Company, LTD., Tokyo, JP;
Abstract
A sound absorber includes at least one cavity and at least one mouth to communicate the at least one cavity with an outside of the sound absorber. The at least one cavity includes a top surface, a bottom surface, and a side wall. The top surface includes the mouth. The bottom surface opposes the top surface. The side wall is extended to connect the top surface with the bottom surface. At least one of the top surface and the bottom surface is inclined with respect to the side wall.