Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10973620 | Biomimetic artificial muscle module, biomimetic artificial muscle assembly having the same, and method of controlling the same | Sang Kyu Choi, Hyun-joon Kwon, Jae Keun Shim, Young-Su Son, Seyoung Kim | 2021-04-13 |
| 10792806 | Device for driving artificial muscle module and method for driving artificial muscle module | Young-Su Son, Sang-Yong Ham, Sang Kyu Choi, Doo Euy Hong, Kyung Jun Choi +1 more | 2020-10-06 |
| 10632739 | Roller module with magnetic bearings and permanent magnets | Taik Min Lee, Dong Woo Kang | 2020-04-28 |
| 10001165 | Thrust magnetic bearing for bias compensation | Sang Kyu Choi, Sang-Yong Ham | 2018-06-19 |
| 9273723 | Composite magnetic bearing having auxiliary bearing coupled thereto | Sang Kyu Choi, Sang-Yong Ham, Doo Euy Hong, Tae Gwang Yoon | 2016-03-01 |
| 9181977 | Air-foil bearing | Sang Kyu Choi, Doo Euy Hong, Tae Gwang Yoon, Sung Hwi Lee, Sang-Yong Ham | 2015-11-10 |
| 9157473 | Thrust bearing and combo bearing | Sang Kyu Choi, Doo Euy Hong, Tae Gwang Yoon | 2015-10-13 |
| 9041266 | Magnetic bearing structure and turbo machine having the same | Sang Kyu Choi, Sang-Yong Ham, Dong Won Yun | 2015-05-26 |
| 8998493 | Split combo bearing | Sang Kyu Choi, Sung Hwi Lee, Sang-Yong Ham, Doo Euy Hong, Tae Gwang Yoon | 2015-04-07 |
| 7952825 | Method and apparatus adjusting reference clock frequency and disk drive using same | Sang-hoon Chu | 2011-05-31 |
| 7715140 | Method of determining size of error and write control method for hard disc drive, hard disc drive using the write control method, and media storing computer programs for executing the methods | Sang-hoon Chu | 2010-05-11 |
| 7619848 | Method of searching to find a servo pattern corresponding to a servo pattern copy process | Ho-Joon Choi | 2009-11-17 |
| 7583465 | Disk drive adaptive resonance compensation method and apparatus | Nam-guk Kim, Soo Young Choi | 2009-09-01 |
| 7489467 | Method for measuring track width of hard disk drive | Jae Hyeong Kim, Yong-Gwon Lee, Sang-hoon Chu | 2009-02-10 |
| 7432673 | Method, medium, and apparatus controlling current gain change of a spindle motor driver | Kyoung-whan Oh, Sang-hoon Chu | 2008-10-07 |
| 7400466 | Method and apparatus for driving spindle motor using adaptive feedforward control | Kang Seok Lee, Kyoung-whan Oh | 2008-07-15 |
| 7369352 | Apparatus, medium, and method with seek servo control considering temperature change | Sang-hoon Chu, Nam-guk Kim | 2008-05-06 |
| 7342739 | Method, medium, and apparatus compensating for torque variations based on temperature | Nam-guk Kim, Sang-hoon Chu | 2008-03-11 |
| 7336438 | Write control method of hard disk drive, hard disk drive adapting the method and recording medium thereof | Sang-hoon Chu | 2008-02-26 |
| 7333292 | Seek servo control method for adapting to supply voltage variation and disk drive using the same | Sang-hoon Chu, Nam-guk Kim | 2008-02-19 |
| 7248428 | Method, medium, and apparatus controlling track seek in a recording and/or reproducing apparatus | Nam-guk Kim, Sang-hoon Chu | 2007-07-24 |
| 7203024 | Method of testing servo burst signals of hard disk drive and recording medium adapted therefor | Yong-Gwon Lee, Sang-hoon Chu, Chul-Sung Park | 2007-04-10 |
| 7158335 | Method for resonance identification in hard disk drives | Sang-hoon Chu, Yong-Gwon Lee | 2007-01-02 |
| 7145743 | Apparatus and method for unlatching a head within a data storage device | Kwang-jo Jung, Sang-hoon Chu, Yong-Gwon Lee, Chul-Sung Park | 2006-12-05 |
| 7116515 | Method and apparatus for compensating for torque change in seek servo | Sang-hoon Chu, Yong-Gwon Lee | 2006-10-03 |