Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9303591 | Propulsion system and rocket having the same | Song Hoe Koo, Ji Chang Yoo, Young Dae Doh | 2016-04-05 |
| 7291073 | Golf club head having a variable loft angle | — | 2007-11-06 |
| 6042671 | Members having improved adhesion and sealing performance for rocket nozzle and fabrication method thereof | Byung-Hahn Yeh, Sang-Ki Chung, Yun Chul Kim, Bal Jung | 2000-03-28 |
| 5942070 | Method for insulating a composite pressure vessel having improved adhesiveness between the insulation and the vessel | Sang-Ki Chung, Bal Jung | 1999-08-24 |
| 5348698 | Method for manufacturing pressure container having opposite dome ends with different opening diameters | Sang-Ki Chung, Bal Jung, Keun Choon Jeong, Jong Sik Kim | 1994-09-20 |
| 5273603 | Method for manufacturing pressure vessels having holes of different diameters | Sung Ho Yoon, Bal Jung | 1993-12-28 |