Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11467062 | Oil pressure switch, apparatus for diagnosing piston cooling oil jet, and method of controlling the same | Choo Saeng Choi, Sang Suk Lee | 2022-10-11 |
| 11009426 | Oil pressure switch, apparatus for diagnosing piston cooling oil jet, and method of controlling the same | Choo Saeng Choi, Sang Suk Lee | 2021-05-18 |
| 10655568 | Fuel vapor purge system and method for diagnosing leakage of fuel vapor using the same | Choo Saeng Choi, Il Nam Lee | 2020-05-19 |
| 10570800 | Exhaust system having differential pressure sensor | — | 2020-02-25 |
| 7261617 | Semiconductor wafer regenerating system and method | Sung Shin Kim | 2007-08-28 |
| 5763082 | Polytetrafluoroethylene molding powder | Masuo Kokumai, Yukiharu Nakamura, Mitsuru Kishine, Tetsuo Kitahaba, Hirokazu Yukawa +3 more | 1998-06-09 |
| 5709944 | Polytetrafluoroethylene molding powder | Masuo Kokumai, Yukinaru Nakamura, Mitsuru Kishine, Tetsuo Kitahaba, Hirokazu Yukawa +3 more | 1998-01-20 |