Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6384507 | Coreless AC induction motor | Seung Hwan Chang | 2002-05-07 |
| 6336986 | Method for producing hybrid driveshaft | Durk-hyun Cho, Jin Kyung Choi, Seong Sik Cheon, Seung Hwan Chang, Je Hoon Oh +4 more | 2002-01-08 |
| 6126770 | Method for fabricating a spindle or roller employing a composite material | Hyun Surk Kim, Young-Goo Kim, Jin Kyung Choi, Seong Sik Cheon, Durk-hyun Cho | 2000-10-03 |