Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8428298 | Damper for speaker and speaker using the damper | Kazuyoshi Umemura | 2013-04-23 |
| 7844071 | Loudspeaker | Osamu Funahashi, Seiichi Yoshida, Kazuyoshi Umemura | 2010-11-30 |
| 7814741 | Glass fiber for reinforcing rubber products and method for producing it | Koji Hattori | 2010-10-19 |
| 7574013 | Speaker | Osamu Funahashi, Seiichi Yoshida, Kazuyoshi Umemura, Yoichi Asahi | 2009-08-11 |
| 7316289 | Electro-acoustic transducer and method of manufacturing transducer | Kenichi Ajiki, Masashi Kawabe | 2008-01-08 |
| 7082668 | Electro-acoustic transducer having vibrating function and method of manufacturing the same | Kenichi Ajiki | 2006-08-01 |
| 7020302 | Speaker, speaker module, and electronic equipment using the speaker module | Shuhei Konishi | 2006-03-28 |
| 6929857 | Fiber for reinforcing rubber products | Shuji Watanabe, Kaoru Shimamura, Koji Hattori, Masayoshi Abe | 2005-08-16 |
| 6875509 | Fiber for reinforcing rubber products | — | 2005-04-05 |