Invention Grant
- Patent Title: Speaker diaphragm and headphone
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Application No.: US17339209Application Date: 2021-06-04
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Publication No.: US11979724B2Publication Date: 2024-05-07
- Inventor: Hiroshi Nakashima , Tsunenori Sano
- Applicant: Yamaha Corporation
- Applicant Address: JP Hamamatsu
- Assignee: Yamaha Corporation
- Current Assignee: Yamaha Corporation
- Current Assignee Address: JP Hamamatsu
- Agency: Crowell & Moring LLP
- Priority: JP 18228738 2018.12.06
- Main IPC: H04R7/12
- IPC: H04R7/12 ; H04R1/10
Abstract:
A speaker diaphragm includes a mixed layer. The mixed layer includes cellulose nanofibers, and polyparaphenylenebenzobisoxazole fibers. An average length of the polyparaphenylenebenzobisoxazole fibers is 0.5 mm or more and 4.0 mm or less.
Public/Granted literature
- US20210297782A1 Speaker Diaphragm and Headphone Public/Granted day:2021-09-23
Information query
