Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D590877 | Highlighter | — | 2009-04-21 |
| D575340 | Pen | — | 2008-08-19 |
| D573639 | Highlighter | Zhiming Qiu | 2008-07-22 |
| D572306 | Dual-tip marker | Zhiming Qiu | 2008-07-01 |
| D572307 | Highlighter | Zhiming Qiu | 2008-07-01 |
| D570414 | Pen | Zhiming Qiu | 2008-06-03 |
| D567852 | Highlighter | Zhiming Qiu | 2008-04-29 |