Issued Patents All Time
Showing 1–25 of 133 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11932578 | Granite stone powder phosphoric acid-based geopolymer and preparation method thereof | Liuyi Ren, Lu Zhang, Shenxu Bao, Yimin Zhang, Yuxiao Zhou | 2024-03-19 |
| 8685509 | Casing for a writing instrument and method of manufacturing the same using a dual injection molding | Bin Lin | 2014-04-01 |
| 7883754 | Casing for a writing instrument and method of manufacturing the same using dual injection molding | Bin Lin | 2011-02-08 |
| D607512 | Dual-tip marker | Yuemin Shi | 2010-01-05 |
| 7465112 | Airtight retractable writing device | — | 2008-12-16 |
| D579496 | Pen | Jipeng Tai | 2008-10-28 |
| D578572 | Pen | Yuemin Shi | 2008-10-14 |
| D577071 | Pen | Yong Zhang | 2008-09-16 |
| D577072 | Pen | — | 2008-09-16 |
| D577065 | Pen | Debin Wei | 2008-09-16 |
| D577070 | Pen | Yu Zhou | 2008-09-16 |
| D576211 | Writing instrument | Yong Zhang | 2008-09-02 |
| D576212 | Dual-tip pen/marker | Yong Zhang | 2008-09-02 |
| D576210 | Pen | Debin Wei | 2008-09-02 |
| D575336 | Highlighter | Yuemin Shi | 2008-08-19 |
| D573640 | Pen | Yong Fei | 2008-07-22 |
| D573639 | Highlighter | Lidan Ma | 2008-07-22 |
| D573183 | Dual-tip highlighter | Yuemin Shi | 2008-07-15 |
| D573185 | Pen | Jipeng Tai | 2008-07-15 |
| D572757 | Mechanical pencil | Chunmiao Ke | 2008-07-08 |
| D572306 | Dual-tip marker | Lidan Ma | 2008-07-01 |
| D572307 | Highlighter | Lidan Ma | 2008-07-01 |
| D570412 | Pen | Youbing Zhang | 2008-06-03 |
| D570414 | Pen | Lidan Ma | 2008-06-03 |
| D569905 | Pen | Li Bin | 2008-05-27 |