Issued Patents All Time
Showing 51–74 of 74 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7498752 | Driving method of external electrode fluorescent lamp inverter for backlight | Suok Gyu Min, Gun Woo Moon, Won Sik Oh, Byoung Own Min | 2009-03-03 |
| 7060464 | Peptides conferring environmental stress resistance and fusion proteins including said peptides | — | 2006-06-13 |
| 6897693 | Delay locked loop for improving high frequency characteristics and yield | — | 2005-05-24 |
| 6858704 | Peptides conferring environmental stress resistance and fusion proteins including said peptides | — | 2005-02-22 |
| 6667566 | Piezoelectric transformer for fluorescent lamp | Choong Sik Yoo | 2003-12-23 |
| 6639636 | Liquid crystal display of direct lighting type | Ho-Han Yoo, Young-Ryul Han | 2003-10-28 |
| 6626201 | Apparatus for preventing reverse flow in drainage | — | 2003-09-30 |
| 6603272 | Rosen type piezoelectric transformer with multiple output electrodes, and stabilizer for multiple light source using that | Jang-Hyoun Youm | 2003-08-05 |
| 6600273 | High-power electronic ballast for fluorescent lamp | Choong Sik Yoo, Jong-Man Jung | 2003-07-29 |
| 6586863 | Rosen type piezoelectric transformer with multiple output electrodes | Jang-Hyoun Youm | 2003-07-01 |
| 6566820 | Piezoelectric transformer with multiple outputs | Jang-Hyoun Youm | 2003-05-20 |
| 6544433 | Piezoelectric ceramic composition, and high power output transformer made of the same composition | Choong Sik Yoo, Joo Hyun Yoo, Yong-Woo Lee | 2003-04-08 |
| 6533957 | Piezoelectric ceramic composition, and high power output transformer made of the same composition | Choong Sik Yoo, Joo Hyun Yoo, Yong-Woo Lee | 2003-03-18 |
| 6509699 | Digital controlled electronic ballast with piezoelectric transformer | Jong Soo Kim, Sang Hyun Lee, Choong Sik Yoo, Jong-Man Jung | 2003-01-21 |
| 6495947 | Piezoelectric ceramic composition, and high power output transformer made of the same composition | Choong Sik Yoo, Joo Hyun Yoo, Yong-Woo Lee | 2002-12-17 |
| 6492763 | Piezoelectric ceramic composition, and high power output transformer made of the same composition | Choong Sik Yoo, Joo Hyun Yoo, Yong-Woo Lee | 2002-12-10 |
| 6442500 | Devices for controlling temperature indications in integrated circuits using adjustable threshold temperatures | — | 2002-08-27 |
| 6417603 | Piezoelectric transformer with patterns for recognizing node point | Nak Cheol Sung | 2002-07-09 |
| 6239642 | Integrated circuits with variable signal line loading circuits and methods of operation thereof | Sung-Min Hwang, Ho-Sung Song | 2001-05-29 |
| 6201436 | Bias current generating circuits and methods for integrated circuits including bias current generators that increase and decrease with temperature | Nak-won Hur | 2001-03-13 |
| 6087763 | Electronic component involving 3-terminal type piezo-electric device | Il Yong Yun | 2000-07-11 |
| 5982076 | Electronic component involving 2-terminal type piezo-electric device | Il Yong Yun, Min Su Kim, Sang Un Son | 1999-11-09 |
| 5926009 | Voltage monitoring circuit in an integrated circuit | — | 1999-07-20 |
| 5786723 | Voltage switching circuit for a semiconductor memory device | — | 1998-07-28 |