Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7998547 | Magnesium oxide-based construction board | Tak Sing Choi | 2011-08-16 |
| 7867597 | Construction board with carbonate | John Wisenbaker, JR., James A. Wambaugh | 2011-01-11 |
| 7255907 | Magnesium oxide-based construction board | Tak Sing Choi | 2007-08-14 |