Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6870937 | Electroacoustic transducer, process of producing the same and electroacoustic transducing device using the same | Yuji Hirosaki, Shiro Kimura, Ikuo Yamamoto | 2005-03-22 |