Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7905647 | Prism sheet, back light unit using the same and liquid crystal display device having the back light unit | Hoe Sup Soh, Man Hoan Lee, Ji-Su Yoon, Jin Hyuk Kwon | 2011-03-15 |
| D625363 | Illuminated exit sign | — | 2010-10-12 |
| 7802894 | Direct type back light unit for liquid crystal display device | Man Hoan Lee | 2010-09-28 |
| D623237 | Combined illuminated emergency and exit sign | — | 2010-09-07 |
| 7774965 | Illuminated emergency sign | — | 2010-08-17 |
| 7665877 | Prism sheet, backlight unit using the same, and method for fabricating the prism sheet | Man Hoan Lee, Ji-Su Yoon | 2010-02-23 |
| 7628526 | Back light unit | Man Hoan Lee, Ji-Su Yoon, Won-Taek Moon, Jun Kyu Paik, Young Hun Jeong | 2009-12-08 |
| 7566158 | Display device and backlight unit for the same | Hoe Sup Soh, Man Hoan Lee | 2009-07-28 |
| 7484874 | Optical sheet and backlight unit having the same | ManHoan Lee, Changki Seo | 2009-02-03 |
| 7473009 | Direct type back light unit for liquid crystal display device | Man Hoan Lee | 2009-01-06 |
| 7465072 | Backlight unit and liquid crystal display device using the same | Young-Tae Hong, Sang-Yun Lee | 2008-12-16 |
| 7407317 | Prism sheet and backlight unit using the same | Man Hoan Lee, Jae Kyung Kang, Ji-Su Yoon, Won-Taek Moon | 2008-08-05 |
| D569030 | Emergency light | — | 2008-05-13 |
| D500814 | Exit sign and rotatable emergency lamp | — | 2005-01-11 |
| D495750 | Exit sign and rotatable emergency lamp | — | 2004-09-07 |
| 6593067 | Method for manufacturing a microstructure by using a high energy light source | Seung Seob Lee, Kwang Cheol Lee | 2003-07-15 |
| 6031786 | Operation control circuits and methods for integrated circuit memory devices | Tae-seong Jang | 2000-02-29 |
| 5645953 | Secondary battery and method for controlling the self-discharge of a nickel/metal hydride secondary battery | Young Woo Kim, Jai-Young Lee, Jon-Ha Lee, Han Ho Lee | 1997-07-08 |