Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8879170 | Condensing lens and lighting device equipped with said condensing lens | Chang-Sub Lee, Kyeong Ik Min, Sang Ho Yoon, Hyung Jin Kim, Jung Kyung Kim | 2014-11-04 |
| 8820979 | Asymmetric type lens and street lamp including the same | Ki Un LEE, Sang Ho Yoon, Dae Il Seok, Seung Gyun JUNG, Joung Wook Park +5 more | 2014-09-02 |
| 8714783 | Optical lens and light source module, and street lamp having the same | Sang Ho Yoon, Hyung Jin Kim, Kyeong Ik Min, Dong Yeoul Lee, Ki Un LEE | 2014-05-06 |