Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8987021 | Manufacturing method of light-emitting device | — | 2015-03-24 |
| 8236103 | Group III nitride semiconductor crystal, production method thereof and group III nitride semiconductor epitaxial wafer | Hisayuki Miki, Tetsuo Sakurai | 2012-08-07 |
| 8134168 | Group-III nitride semiconductor device | Hiromitsu Sakai | 2012-03-13 |
| 7855386 | N-type group III nitride semiconductor layered structure | Akira Bandoh, Hiromitsu Sakai, Masato Kobayakawa, Hideki Tomozawa, Hisayuki Miki +3 more | 2010-12-21 |
| 7488971 | Nitride semiconductor; light-emitting device, light-emitting diode, laser device and lamp using the semiconductor; and production methods thereof | Masato Kobayakawa, Hideki Tomozawa | 2009-02-10 |
| 7402841 | Gallium nitride-based compound semiconductor light-emitting device and electrode for the same | Hideki Tomozawa, Noritaka Muraki, Soichiro Masuyama | 2008-07-22 |
| 7057210 | Electrode for light-emitting semiconductor devices and method of producing the electrode | Hisayuki Miki, Takashi Udagawa, Noritaka Muraki | 2006-06-06 |
| 6852161 | METHOD OF FABRICATING GROUP-III NITRIDE SEMICONDUCTOR CRYSTAL, METHOD OF FABRICATING GALLIUM NITRIDE-BASED COMPOUND SEMICONDUCTOR, GALLIUM NITRIDE-BASED COMPOUND SEMICONDUCTOR, GALLIUM NITRIDE-BASED COMPOUND SEMICONDUCTOR LIGHT-EMITTING DEVICE, AND LIGHT SOURCE USING THE SEMICONDUCTOR LIGHT-EMITTING DEVICE | Yasuhito Urashima, Tetsuo Sakurai, Hisayuki Miki | 2005-02-08 |
| 6800501 | Electrode for light-emitting semiconductor devices and method of producing the electrode | Hisayuki Miki, Takashi Udagawa, Noritaka Muraki | 2004-10-05 |
| 6403987 | Electrode for light-emitting semiconductor devices | Hisayuki Miki, Takashi Udagawa, Noritaka Muraki | 2002-06-11 |
| 6326223 | Electrode for light-emitting semiconductor devices and method of producing the electrode | Hisayuki Miki, Takashi Udagawa, Noritaka Muraki | 2001-12-04 |
| 6268618 | Electrode for light-emitting semiconductor devices and method of producing the electrode | Hisayuki Miki, Takashi Udagawa, Noritaka Muraki | 2001-07-31 |