Issued Patents All Time
Showing 1–25 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11421115 | Composition for electroless plating underlying membrane | Fumioki Fukatsu | 2022-08-23 |
| 10848860 | Speaker frame and speaker having the same | Shintaro Niidera | 2020-11-24 |
| 10284946 | Speaker frame and speaker having the same | Shintaro Niidera | 2019-05-07 |
| 10194236 | Speaker frame and speaker having the same | Shintaro Niidera | 2019-01-29 |
| 10015585 | Speaker frame and speaker having the same | Shintaro Niidera | 2018-07-03 |
| 9924262 | Speaker frame and speaker having the same | Shintaro Niidera | 2018-03-20 |
| 9602900 | Speaker frame and speaker having the same | Shintaro Niidera | 2017-03-21 |
| 9351058 | Speaker frame and speaker having the same | Shintaro Niidera | 2016-05-24 |
| 9148715 | Speaker frame and speaker having the same | Shintaro Niidera | 2015-09-29 |
| 8731232 | Speaker frame and speaker having the same | Shintaro Niidera | 2014-05-20 |
| 8620017 | Speaker and magnetic circuit | Sinsuke Konuma, Koji Maekawa | 2013-12-31 |
| 8013160 | Fluorene-based derivative and organic electroluminescence device employing the same | Mitsunori Ito, Hiroshi Yamamoto, Hisayuki Kawamura | 2011-09-06 |
| 7849958 | Vibration system part for speaker device and manufacturing method thereof | Masatoshi Sato, Hiroyuki Kobayashi, Koji Takayama | 2010-12-14 |
| 7781628 | Fluorene-based derivative and organic electroluminescence device employing the same | Mitsunori Ito, Hiroshi Yamamoto, Hisayuki Kawamura | 2010-08-24 |
| 7706564 | Diaphragm and speaker | Koji Matsumoto, Michihiro Ogahara | 2010-04-27 |
| 7683225 | Fluorene-based derivative and organic electroluminescence device employing the same | Mitsunori Ito, Hiroshi Yamamoto, Hisayuki Kawamura | 2010-03-23 |
| 7601763 | Diaphragm for speaker and manufacturing method thereof | Koji Matsumoto, Shunji Takeda | 2009-10-13 |
| 7454032 | Magnesium diaphragm, method of manufacturing the same, and speaker apparatus | Hiroyuki Tomiyama, Masatoshi Sato, Kouichi Honma | 2008-11-18 |
| 7443998 | Speaker diaphragm and manufacturing method thereof | — | 2008-10-28 |
| 7420065 | Hetero-polycyclic compounds, and coloring matters, pigments, dyes, color-changing material compositions, and color-changing films, made by using the compounds | Katsuhira Yoshida, Yousuke Ooyama | 2008-09-02 |
| 7393618 | Composition for color converting member and production method of color conversion substrate using the same | Atau Ioku | 2008-07-01 |
| 7221090 | Blue organic electroluminescent device and display using same | Hitoshi Kuma, Chishio Hosokawa, Kenichi Fukuoka | 2007-05-22 |
| 7092544 | Diaphragm for electroacoustic transducer and method of making the same | Masatoshi Sato | 2006-08-15 |
| 7006652 | Speaker damper | Hiroyuki Tomiyama | 2006-02-28 |
| 6871724 | Electroacoustic transducer frame and method of making the same | Masatoshi Sato, Kazuhiko Saheki, Shigeyuki Kousaka, Moriyuki Yokoyama | 2005-03-29 |