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:
Apr. 19, 2022
Filed:
Apr. 24, 2020
Nitto Denko Corporation, Osaka, JP;
Tamao Fukushima, Osaka, JP;
Takeo Inoue, Osaka, JP;
Yu Kamamoto, Osaka, JP;
Hisae Kitagawa, Osaka, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
A waterproof membrane of the present disclosure has an insertion loss of 5.0 dB or less for sound with a frequency of 1 kHz, and an insertion loss of 5.0 dB or less for sound with a frequency of 10 kHz when a permeation region for sound of the waterproof membrane has an area of 1.3 mm. The waterproof membrane of the present disclosure can cope with further size reduction of the permeation region. A waterproof member of the present disclosure includes the above-mentioned waterproof membrane of the present invention and a support member joined to the waterproof membrane.