Title:
エレクトレット誘電体膜の表面電圧調整方法
Document Type and Number:
Japanese Patent JP5075495
Kind Code:
B2
Inventors:
Hiroshi Akino
Application Number:
JP2007157041A
Publication Date:
November 21, 2012
Filing Date:
June 14, 2007
Export Citation:
Assignee:
Audio Technica Co., Ltd.
International Classes:
H01G7/02; H04R19/01; H04R19/04
Domestic Patent References:
| JP2008131160A |
Attorney, Agent or Firm:
Takuya Ohara