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. 05, 2020
Filed:
Feb. 01, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Tetsushi Itano, Osaka, JP;
Tomonori Shibuya, Osaka, JP;
Mitsukazu Kuze, Osaka, JP;
Yoshiyuki Takahashi, Okayama, JP;
Ryo Kuribayashi, Osaka, JP;
Hiroyuki Amada, Osaka, JP;
Abstract
A loudspeaker diaphragm includes a woven fabric which is a base member, a sealing layer, and a coating layer. The woven fabric includes a first face and a second face on the reverse side of the woven fabric from the first face. The woven fabric is made into the shape of a diaphragm. The sealing layer is disposed on the first face of the woven fabric, and seals the mesh openings surrounded by warp threads and weft threads of the woven fabric. The coating layer is formed of a first composite material which is a mixture of a plurality of first short nanofibers and a first resin. The coating layer permeates the woven fabric from the second face of the woven fabric to the sealing layer.