Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12281482 | Floor covering with interlocking design | Hao A. Chen | 2025-04-22 |
| 11795701 | Floor covering with interlocking design | Hao A. Chen | 2023-10-24 |
| 11359387 | Floor covering with interlocking design | Hao A. Chen | 2022-06-14 |
| 10704269 | Floor covering with interlocking design | Hao A. Chen | 2020-07-07 |
| 9695601 | Floor covering with interlocking design | Hao A. Chen | 2017-07-04 |
| 8833028 | Floor covering with interlocking design | Hao A. Chen | 2014-09-16 |
| 8429870 | Connecting system for surface coverings | Hao A. Chen | 2013-04-30 |
| 8006460 | Floor covering with interlocking design | Hao A. Chen, Ji-Min Wan | 2011-08-30 |
| 7849655 | Connecting system for surface coverings | Hao A. Chen | 2010-12-14 |
| 6363677 | Surface covering system and methods of installing same | Hao A. Chen | 2002-04-02 |
| 5540971 | Industrial roofing fabric | Mark Daurer | 1996-07-30 |
| 5525413 | Industrial roofing fabric | Mark Daurer | 1996-06-11 |