Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8729598 | Light-emitting diode, method for manufacturing the same, and light-emitting diode lamp | Ryouichi Takeuchi | 2014-05-20 |
| 8643023 | Light emitting diode, light emitting diode lamp, and lighting apparatus | Ryouichi Takeuchi | 2014-02-04 |
| 8592858 | Light-emitting diode and method for fabrication thereof | — | 2013-11-26 |
| 8158987 | Light-emitting diode and method for fabrication thereof | Ryouichi Takeuchi | 2012-04-17 |
| 7915619 | Light-emitting diode and method for fabrication thereof | Ryouichi Takeuchi | 2011-03-29 |
| 7790481 | Compound semiconductor light-emitting device and production method thereof | Ryouichi Takeuchi, Takashi Udagawa | 2010-09-07 |
| 7732831 | Compound semiconductor light-emitting device with AlGaInP light-emitting layer formed within | Ryouichi Takeuchi, Takashi Udagawa | 2010-06-08 |
| 6677615 | Semiconductor light-emitting device, electrode for the device, method for fabricating the electrode, LED lamp using the device, and light source using the LED lamp | Ryouichi Takeuchi, Kazuhiro Mitani, Takashi Udagawa, Takaharu Hoshina | 2004-01-13 |
| 6512248 | Semiconductor light-emitting device, electrode for the device, method for fabricating the electrode, LED lamp using the device, and light source using the LED lamp | Ryouichi Takeuchi, Kazuhiro Mitani, Takashi Udagawa, Takaharu Hoshina | 2003-01-28 |