Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11073977 | Method for setting date and time by electronic device and electronic device therefor | Eun Sun Kim, Ji Hee Kim, Gu-Hyun Yang, Sue-Jung OH, Seung Won Lee +2 more | 2021-07-27 |
| 11068143 | Method for setting date and time by electronic device and electronic device therefor | Eun Sun Kim, Ji Hee Kim, Gu-Hyun Yang, Sue-Jung OH, Seung Won Lee +2 more | 2021-07-20 |
| 10572131 | Method for setting date and time by electronic device and electronic device therefor | Eun Sun Kim, Ji Hee Kim, Gu-Hyun Yang, Sue-Jung OH, Seung Won Lee +2 more | 2020-02-25 |
| 8202086 | Vertical furnace for fabrication of fine artificial lightweight aggregates | Yoo Taek Kim, Ki-Gang Lee, Jung-Hwan Kim, Hyun Ju Lee | 2012-06-19 |
| 7597839 | Method for manufacturing artificial ultra-lightweight aggregate using raw sewage sludge | Ki-Gang Lee, Yoo Taek Kim, Jung-Hwan Kim, Young Ho JEONG | 2009-10-06 |
| 5896442 | Voice announcement technique of an electronic exchange system | Choon-Keun Song | 1999-04-20 |