Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11352869 | Method and system for analyzing a drill string stuck pipe event | Feifei Zhang, Dale E. Jamison | 2022-06-07 |
| 10794698 | Method and apparatus for indicating direction | Rui Sun, Teng Zhang, Renzhi Yang | 2020-10-06 |
| 7724623 | Reading method of optical disc drive for reading disc and finding if disc is placed reversely | Po-Chuan Su, Mu-Shu Tsai | 2010-05-25 |
| 7440371 | Unbalanced disc detection and reading speed control in disc reading apparatus | Jen-Kuei Hsieh | 2008-10-21 |
| 7414928 | Method for determining sub-beam add signal (SBAD) value | Tao Wei | 2008-08-19 |
| 7385894 | Method for determining defective blocks of optical disc | Jen-Kuei Hsieh | 2008-06-10 |
| 6934232 | Method for detecting an unbalanced disk in an optical disk reading device | — | 2005-08-23 |