Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8730537 | Duplex scanning apparatus with elastic pressing member disposed between two scan positions | — | 2014-05-20 |
| 7591461 | Automatic document feeder having a sheet-lifting mechanism | Thomas Sheng | 2009-09-22 |
| 7391538 | Sheet-fed scanner capable of scanning multiple scan lines for image signal calibration | — | 2008-06-24 |
| 7380782 | Automatic document feeder having a replaceable friction roller assembly | — | 2008-06-03 |
| 6773007 | Paper feeding device having replaceable paper conveying roller for a printer | Thomas Sheng | 2004-08-10 |
| 6601845 | Automatic document feeder | Jack Lin | 2003-08-05 |
| 6488276 | Paper feeding device having a replaceable paper conveying roller | Thomas Sheng | 2002-12-03 |