Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7981210 | Capillary-action, glitter markers and ink compositions for same | Wing Sum Vincent Kwan | 2011-07-19 |
| 7364614 | Capillary-action, glitter markers and ink compositions for same | Wing Sum Vincent Kwan | 2008-04-29 |
| 7018122 | Single- or double-ended multi-section nib marker | Vincent Kwan | 2006-03-28 |