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:
Jul. 01, 2025
Filed:
Jun. 02, 2021
Applicant:
Foster Electric Company, Limited, Tokyo, JP;
Inventors:
Hisami Kajiwara, Tokyo, JP;
Masahiro Miwa, Tokyo, JP;
Assignee:
FOSTER ELECTRIC COMPANY, LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 31/00 (2006.01);
U.S. Cl.
CPC ...
H04R 31/003 (2013.01); H04R 2307/021 (2013.01); H04R 2307/029 (2013.01);
Abstract
An aspect of the present invention is directed to a diaphragm for an electroacoustic transducer, and according to the diaphragm for an electroacoustic transducer, in a base material made of a fiber material mainly composed of cellulose fibers, a mixed layer in which the fiber material and silk nanofibers are mixed is formed.