Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11044023 | Parametric array system | — | 2021-06-22 |
| 9324913 | Nitride semiconductor structure, multilayer structure, and nitride semiconductor light-emitting element | Songbaek CHOE, Toshiya Yokogawa | 2016-04-26 |
| 9318659 | Nitride semiconductor light emitting element having light emitting layer including INxGa1-xN well layer and LED system | Akira Inoue, Toshiya Yokogawa | 2016-04-19 |
| 8994031 | Gallium nitride compound semiconductor light emitting element and light source provided with said light emitting element | Ryou Kato, Toshiya Yokogawa | 2015-03-31 |
| 8866127 | Nitride semiconductor light-emitting element including Si-doped layer, and light source | Kunimasa Takahashi, Ryou Kato, Toshiya Yokogawa | 2014-10-21 |
| 8546167 | Gallium nitride-based compound semiconductor light-emitting element | Ryou Kato, Toshiya Yokogawa | 2013-10-01 |
| 8422728 | Electromagnetic converter | — | 2013-04-16 |
| 8163573 | Method for manufacturing nitride semiconductor element | Ryou Kato, Toshiya Yokogawa | 2012-04-24 |
| D647078 | Diaphragm for a speaker | Kiyofumi Mori | 2011-10-18 |
| 7929725 | Acoustic apparatus and telephone conversation apparatus | Tomohiro Sugiura | 2011-04-19 |
| D626113 | Speaker unit | — | 2010-10-26 |
| 7424118 | Moving object equipped with ultra-directional speaker | Kiyofumi Mori, Hiroshi Okuno, Kazuhiro Nakadai, Hiroshi Tsujino | 2008-09-09 |
| 6123767 | Method and apparatus for feeding a gas for epitaxial growth | Yoshiharu Toyama, Akikazu Kuroda, Tokuji Kiyama, Sumio Kida, Takashi Yamamoto +1 more | 2000-09-26 |
| 6039809 | Method and apparatus for feeding a gas for epitaxial growth | Yoshiharu Toyama, Akikazu Kuroda, Tokuji Kiyama, Sumio Kida, Takashi Yamamoto +1 more | 2000-03-21 |
| 5089355 | Flexible metal clad laminate, production method thereof and apparatus for the method | Moritsugu Morita, Takushi Sato, Shusuke Yamanaka, Kenji Tanabe, Mitsuyuki Naito +1 more | 1992-02-18 |