Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6794001 | Flooring with a 2-part adhesive | Hao A. Chen, Yuhong Hu, Tianjian Huang, Isaac Bernard Rufus | 2004-09-21 |
| 6761008 | Connecting system for surface coverings | Hao A. Chen | 2004-07-13 |
| 6675545 | Connecting system for surface coverings | Hao A. Chen | 2004-01-13 |