Invention Grant
- Patent Title: Electret device and electrostatic operating apparatus
- Patent Title (中): 驻极体装置和静电操作装置
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Application No.: US12110013Application Date: 2008-04-25
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Publication No.: US07825547B2Publication Date: 2010-11-02
- Inventor: Naoteru Matsubara , Yoshiki Murayama , Yoshinori Shishida , Hitoshi Hirano
- Applicant: Naoteru Matsubara , Yoshiki Murayama , Yoshinori Shishida , Hitoshi Hirano
- Applicant Address: JP Osaka
- Assignee: Sanyo Electric Co., Ltd.
- Current Assignee: Sanyo Electric Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Ditthavong, Mori & Steiner, P.C.
- Priority: JP2007-118009 20070427
- Main IPC: G11C13/02
- IPC: G11C13/02
Abstract:
An electret device includes an electret film capable of storing charges and a protective film formed so as to substantially surround a side end surface of the electret film.
Public/Granted literature
- US20080265686A1 ELECTRET DEVICE AND ELECTROSTATIC OPERATING APPARATUS Public/Granted day:2008-10-30
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