Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7215980 | Pen-type mobile telephone | Yongsen Chai, Xiangji Li, Xintao Sun | 2007-05-08 |
| D491542 | Mobile phone | Yongsen Chai, Xintao Sun | 2004-06-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7215980 | Pen-type mobile telephone | Yongsen Chai, Xiangji Li, Xintao Sun | 2007-05-08 |
| D491542 | Mobile phone | Yongsen Chai, Xintao Sun | 2004-06-15 |