Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8428492 | Connection assembly of photo-conductor drum | — | 2013-04-23 |
| 7255431 | Ink cartridge | — | 2007-08-14 |
| 7255432 | Ink cartridge | — | 2007-08-14 |
| 7175267 | Ink cartridge | — | 2007-02-13 |
| D517600 | Clip for ink cartridge | — | 2006-03-21 |
| D496685 | Ink box clip | Yiu Cheong Law | 2004-09-28 |
| D496686 | Ink box clip | Yiu Cheong Law | 2004-09-28 |
| 6783219 | Ink cartridge | Zhao Hui Tang, Yiu Cheong Law | 2004-08-31 |
| 6761441 | Ink cartridge | — | 2004-07-13 |
| 6619790 | Ink-jet printer cartridge upper cover | Yiu Cheong Law | 2003-09-16 |
| 6567636 | Toner cartridge with a toner stirring mechanism | Yiu Cheong Law | 2003-05-20 |
| 6560425 | Shutter device for a photosensitive rotary drum on the process cartridge | Yiu Cheong Law | 2003-05-06 |
| 6508601 | Charging contact plate | Yiu Cheong Law | 2003-01-21 |
| 6474802 | Ink cartridge | — | 2002-11-05 |