Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9574737 | Aspherical LED lens and light emitting device including the same | Kwang-Il Park, Sang Cheol Lee, Jeong A Han, Hee Tak Oh | 2017-02-21 |
| 9022618 | Aspherical LED lens and light emitting device including the same | Kwang-Il Park, Sang Cheol Lee, Jeong A Han, Hee Tak Oh | 2015-05-05 |
| 8602605 | Aspherical LED lens and light emitting device including the same | Kwang-Il Park, Sang Cheol Lee, Jeong A Han, Hee Tak Oh | 2013-12-10 |
| 7084468 | Hybrid ferromagnet/semiconductor spin device and fabrication method therof | Woo Young Lee, Suk Hee Han, Joon Yeon Chang, Hi Jung Kim, Han-Joo Lee +2 more | 2006-08-01 |