| 11787448 |
Hypertube transport system |
Kwan Sup Lee, Young Jun Jang, Jae Hoon Kim, Lee Hyeon KIM, Min Hwan Ok +5 more |
2023-10-17 |
| 11320070 |
Tube infrastructure with vacuum pressure |
Jae Heon Choe, Kwan Sup Lee, Su Yong CHOI, Jung Youl Lim, Jin Ho Lee +4 more |
2022-05-03 |
| 9576122 |
System and method for secure data entry |
— |
2017-02-21 |
| 8738908 |
System and method for web-based security authentication |
— |
2014-05-27 |
| 8267339 |
Transfer unit having transfer rotor and food waste treatment apparatus using the same |
Myung Jin Park, Dong Hee Jang |
2012-09-18 |
| 7953466 |
Superconducting cable |
Hyun Man Jang, Choon Dong Kim |
2011-05-31 |
| 7434267 |
Method of preventing reduction of sales amount of records due to a digital music file illegally distributed through communication network |
Cheol-Woong Lee |
2008-10-07 |
| 7299498 |
System and method of sharing digital literary works while protecting against illegal reproduction through communication network |
Cheol-Woong Lee |
2007-11-20 |
| 5931028 |
Filter for a washing machine |
Jung-soo Shin |
1999-08-03 |
| 5921113 |
Clothes washing machine having electrolytic purifier for waste water |
Hyung-Kyun Kim, Jung Soo Chin, Cheol Tae Lee |
1999-07-13 |
