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. 12, 2023
Filed:
Feb. 12, 2021
Fujifilm Corporation, Tokyo, JP;
Yoshihiro Sugawara, Ashigara-kami-gun, JP;
Shogo Yamazoe, Ashigara-kami-gun, JP;
Shinya Hakuta, Ashigara-kami-gun, JP;
Akihiko Ohtsu, Ashigara-kami-gun, JP;
Kazuhiro Oki, Ashigara-kami-gun, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
An object is to provide a silencing system that can achieve both high ventilation performance and high soundproof performance, can silence a plurality of pieces of resonant sound, and has high general-purpose properties since the silencing system does not need to be designed according to a tubular member. The silencing system includes one or more silencers that are disposed in a tubular member provided to penetrate a wall separating two spaces, and satisfies '0<Re[Bn]<1' and 'Im[Bn]>0' in a case where a standardized effective modulus of elasticity in an interior space of the tubular member in which the silencers are disposed is denoted by Bn.