发明授权
US08406452B2 Diaphragm for speaker, speaker using the diaphragm, and system using the speaker
有权
扬声器隔膜,扬声器使用隔膜,系统使用扬声器
- 专利标题: Diaphragm for speaker, speaker using the diaphragm, and system using the speaker
- 专利标题(中): 扬声器隔膜,扬声器使用隔膜,系统使用扬声器
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申请号: US12602017申请日: 2008-07-08
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公开(公告)号: US08406452B2公开(公告)日: 2013-03-26
- 发明人: Yoshimichi Kajihara , Kazuaki Nishimura , Hiroshi Shinkoda
- 申请人: Yoshimichi Kajihara , Kazuaki Nishimura , Hiroshi Shinkoda
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: RatnerPrestia
- 优先权: JP2007-183964 20070713; JP2007-183965 20070713; JP2007-259594 20071003; JP2007-259595 20071003
- 国际申请: PCT/JP2008/001817 WO 20080708
- 国际公布: WO2009/011102 WO 20090122
- 主分类号: H04R11/02
- IPC分类号: H04R11/02
摘要:
A loudspeaker diaphragm contains polylactic acid, and bamboo charcoal mixed in the polylactic acid. The diaphragm does not affect environment and provides a loudspeaker with high sound quality.
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