Invention Grant
- Patent Title: Loudspeaker diaphragm, and loudspeaker, electronic device and mobile device including the diaphragm
-
Application No.: US15023684Application Date: 2015-08-21
-
Publication No.: US09781515B2Publication Date: 2017-10-03
- Inventor: Tomonori Shibuya , Yoshiyuki Takahashi , Yoshimichi Kajihara , Tetsushi Itano , Mitsukazu Kuze , Takayuki Dan
- Applicant: Panasonic Intellectual Property Management Co., Ltd.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2014-181936 20140908
- International Application: PCT/JP2015/004194 WO 20150821
- International Announcement: WO2016/038813 WO 20160317
- Main IPC: H04R1/00
- IPC: H04R1/00 ; H04R7/06 ; H04R9/06 ; H04R7/12 ; H04R9/04
Abstract:
A loudspeaker diaphragm includes a base layer and a coating layer. The base layer contains natural fibers. The coating layer is composed of bamboo cellulose nanofibers and is formed at least on the first side of the base layer. The coating layer has a thickness in the range of 3% to 15%, both inclusive of the sum of the thicknesses of the base layer and the coating layer.
Public/Granted literature
- US20160212540A1 LOUDSPEAKER DIAPHRAGM, AND LOUDSPEAKER, ELECTRONIC DEVICE AND MOBILE DEVICE INCLUDING THE DIAPHRAGM Public/Granted day:2016-07-21
Information query
