Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9711685 | Sapphire substrate and method for manufacturing the same and nitride semiconductor light emitting element | Takashi Ohara, Yoshiki Inoue, Yuki Shibutani, Yoshihito Kawauchi, Kazuyuki Takeichi +1 more | 2017-07-18 |
| 9525103 | Sapphire substrate having elongated projection and semiconductor light emitting device utilizing the same | Junya Narita, Takuya Okada, Yohei Wakai, Yoshiki Inoue, Katsuyoshi Kadan | 2016-12-20 |
| 9337390 | Sapphire substrate and method for manufacturing the same and nitride semiconductor light emitting element | Takashi Ohara, Yoshiki Inoue, Yuki Shibutani, Yoshihito Kawauchi, Kazuyuki Takeichi +1 more | 2016-05-10 |
| 9070814 | LED sapphire substrate with groups of three projections on the surface | Junya Narita, Takuya Okada, Yohei Wakai, Yoshiki Inoue, Katsuyoshi Kadan | 2015-06-30 |
| 9012936 | Sapphire substrate having triangular projections with portions extending in direction of substrate crystal axis | Junya Narita, Takuya Okada, Yohei Wakai, Yoshiki Inoue, Katsuyoshi Kadan | 2015-04-21 |
| 8957433 | Sapphire substrate and method for manufacturing the same and nitride semiconductor light emitting element | Takashi Ohara, Yoshiki Inoue, Yuki Shibutani, Yoshihito Kawauchi, Kazuyuki Takeichi +1 more | 2015-02-17 |
| 8847262 | Sapphire substrate having triangular projections with bottom sides formed of outwardly curved lines | Junya Narita, Takuya Okada, Yohei Wakai, Yoshiki Inoue, Katsuyoshi Kadan | 2014-09-30 |
| 8847263 | Sapphire substrate having triangular projections with outer perimeter formed of continuous curve | Junya Narita, Takuya Okada, Yohei Wakai, Yoshiki Inoue, Katsuyoshi Kadan | 2014-09-30 |