Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8670206 | Disk drive estimating repeatable runout of reference pattern based on repeatable runout of phase error | Jiangang Liang, Siri S. Weerasooriya | 2014-03-11 |
| 8665546 | Adaptive threshold for detecting touchdown or contamination | Hongchao ZHAO, Jiangang Liang, Don Brunnett | 2014-03-04 |
| 8537486 | Disk drive writing spiral tracks on a slave surface using repeatable runout compensation for a master surface | Jiangang Liang, Siri S. Weerasooriya, Yun-Gi Hong | 2013-09-17 |
| 8218260 | Processing disks on a spin stand | Dhanakorn Iamratanakul, Thomas A. O'Dell | 2012-07-10 |
| 7852592 | Spiral slope approximation of spiral patterns written to a disk of a disk drive | Jiangang Liang, Charles A. Park, Siri S. Weerasooriya | 2010-12-14 |
| 7391584 | Compensating for repeatable phase error when servo writing a disk drive from spiral tracks | Edgar D. Sheh | 2008-06-24 |
| 7333280 | Servo writing a disk drive by synchronizing a servo write clock to a reference pattern on the disk and compensating for repeatable phase error | Yakov M. Lifchits, Wing Ying, Siri S. Weerasooriya | 2008-02-19 |