Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12293744 | Head joint for wind instrument, having mouthpiece and reed portion formed thereon, and wind instrument comprising same | Da-Young Gong | 2025-05-06 |
| 11856666 | Alternating current source direct driving LED lighting device | Da-Young Gong | 2023-12-26 |
| 11076459 | LED lighting device for preventing flickering | Da-Young Gong | 2021-07-27 |
| 10490703 | Light-emitting-device package and production method therefor | Tae-Kyung Yoo, Yong Wook Cho, Min Pyo Kim, Sung Hwan Yoo, Kyoung Min Kim | 2019-11-26 |
| 10405387 | LED lighting device using AC power supply | Soo Geun Yoo, Hong Geol Choi, Ho Young Lee | 2019-09-03 |
| 10362649 | LED lighting device | Kyung Ho Yoo, Kil Ho CHOO, Jong-Il Kim, Young June Lee, Seung Jong Han +1 more | 2019-07-23 |
| 10283678 | Light-emitting-device package and production method therefor | Tae-Kyung Yoo, Yong Wook Cho, Min Pyo Kim, Sung Hwan Yoo, Kyoung Min Kim | 2019-05-07 |
| 10206256 | LED lighting device | Kyung Ho Yoo, Kil Ho CHOO, Jong-Il Kim, Young June Lee, Seung Jong Han +1 more | 2019-02-12 |
| 10165637 | LED lighting device using AC power supply | Soo Geun Yoo, Hong Geol Choi, Ho Young Lee | 2018-12-25 |
| 10051697 | Free voltage LED driving device with high luminous uniformity ratio | Da-Young Gong | 2018-08-14 |
| 10015853 | LED lighting device using AC power supply | Soo Geun Yoo, Hong Geol Choi, Ho Young Lee | 2018-07-03 |
| 9997675 | Light-emitting-device package and production method therefor | Tae Kyoung Yoo, Yong Wook Cho, Min Pyo Kim, Sung Hwan Yoo, Kyoung Min Kim | 2018-06-12 |
| 9918363 | LED lighting device | Kyung Ho Yoo, Kil Ho CHOO, Jong-Il Kim, Young June Lee, Seung Jong Han +1 more | 2018-03-13 |
| 9788377 | LED lighting device using AC power supply | Soo Geun Yoo, Hong Geol Choi, Ho Young Lee | 2017-10-10 |
| 9780262 | Light-emitting-device package and production method therefor | Tae Kyoung Yoo, Yong Wook Cho, Min Pyo Kim, Sung Hwan Yoo, Kyoung Min Kim | 2017-10-03 |
| 9713208 | LED lighting device | Hee Jin Jung | 2017-07-18 |
| 9583685 | Light-emitting-device package and production method therefor | Tae Kyoung Yoo, Yong Wook Cho, Min Pyo Kim, Sung Hwan Yoo, Kyoung Min Kim | 2017-02-28 |
| 9583686 | Light-emitting-device package and production method therefor | Tae Kyoung Yoo, Yong Wook Cho, Min Pyo Kim, Sung Hwan Yoo, Kyoung Min Kim | 2017-02-28 |
| 9572212 | LED lighting device using AC power supply | Soo Geun Yoo, Hong Geol Choi, Ho Young Lee | 2017-02-14 |
| 9491825 | LED lighting device | Kyung Ho Yoo, Yong Wook Cho, Kil Ho CHOO, Jong-Il Kim, Young June Lee +1 more | 2016-11-08 |
| 9408263 | LED lighting device | Hee Jin Jung | 2016-08-02 |
| 9385289 | Light-emitting-device package and production method therefor | Tae Kyoung Yoo, Yong Wook Cho, Min Pyo Kim, Sung Hwan Yoo, Kyoung Min Kim | 2016-07-05 |
| 8212276 | Arrangement of electrodes for light emitting device | — | 2012-07-03 |
| 7329929 | SRAM cell and method of manufacturing the same | Do Woo KIM, Chang Yeol Lee | 2008-02-12 |
| 7012449 | Input and output driver | Chang Yeol Lee | 2006-03-14 |