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:
Jun. 25, 2024
Filed:
Mar. 04, 2021
Mitsubishi Chemical Corporation, Tokyo, JP;
Katsuhiko Sugiura, Tokyo, JP;
Shogo Koga, Tokyo, JP;
Naoyuki Uchida, Tokyo, JP;
Kazuma Inoue, Tokyo, JP;
Yukio Kato, Tokyo, JP;
Kohji Uehara, Tokyo, JP;
Masashi Miura, Tokyo, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
An object of the present invention is to provide a sound-blocking sheet member that is relatively lightweight, has high sound-blocking performance overwhelming the law of mass action, and is excellent in terms of manufacturability and durability. The sound-blocking sheet member includes at least a sheet and a plurality of resonance portions. The resonance portion is provided in contact with a sheet surface of the sheet, and the resonance portion includes a weight portion and a base portion. The weight portion is supported by the base portion and has a larger mass than the base portion, and the weight portion has a penetration portion. The base portion is in contact with a surface on a resonance portion front end side of the weight portion and covers the weight portion.