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Article: Patent No. 7,558,397 Issued on July 7, Assigned to Kabushiki Kaisha Audio-Technica for Condenser Microphone (Japanese Inventor)
- Article from:
- US Fed News Service, Including US State News
- Article date:
- July 14, 2009
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ALEXANDRIA, Va., July 14 -- Hiroshi Akino, Machida, Japan, has developed a condenser microphone of double shield construction with an external cylinder. The inventor was issued U.S. Patent No. 7,558,397 on July 7.
The patent has been assigned to Kabushiki Kaisha Audio-Technica, Tokyo.
According to the abstract released by the U.S. Patent & Trademark Office: "In a condenser microphone of double shield construction having an external cylinder and an internal cylinder, both of which are made of a metal, especially like a line microphone, impedance between shield parts against a high-frequency current caused by electromagnetic waves is always kept low, by which the occurrence of noise ...