Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9911897 | Method for producing substrate for semiconductor light emitting elements, method for manufacturing semiconductor light emitting element, substrate for semiconductor light emitting elements, and semiconductor light emitting element | Kei Shinotsuka, Kotaro DAI | 2018-03-06 |
| 9748441 | Dry etching method of manufacturing semiconductor light emitting device substrate | Yoshihisa Hatta, Kei Shinotsuka, Kotaro DAI | 2017-08-29 |
| 9515223 | Semiconductor light emitting device substrate including an uneven structure having convex portions, and a flat surface therebetween | Yoshihisa Hatta, Kei Shinotsuka, Kotaro DAI | 2016-12-06 |