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:
May. 09, 2023
Filed:
Jan. 26, 2022
Applicant:
Hosiden Corporation, Osaka, JP;
Inventors:
Tsutomu Matsushita, Fukuoka, JP;
Hiroyuki Harano, Fukuoka, JP;
Ryuji Awamura, Fukuoka, JP;
Kensuke Nakanishi, Fukuoka, JP;
Assignee:
HOSIDEN CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/44 (2006.01); H04R 1/08 (2006.01);
U.S. Cl.
CPC ...
H04R 1/44 (2013.01); H04R 1/08 (2013.01);
Abstract
A microphone unit including a tubular case having an opened top and an opened bottom, a waterproof film made of metal that has a thickness of 0.01 mm or more and 0.05 mm or less, a hardness of 100 HV or more, a proof stress of 70 N/mmor more, and a tensile strength of 350 N/mmor more, the waterproof film being fixed to the bottom of the case so as to block an opening part of the bottom of the case, a substrate arranged in the case, a microphone mounted on the substrate, and a sealing member that seals an opening part of the top of the case.