Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6822033 | Compositions and methods for treating set gypsum | Qiang Yu, Jeffrey F. Grussing, Kevin W. Moyer, JR., Richard Spencer | 2004-11-23 |
| 6805741 | Ready-mixed setting-type composition and related kit | Kumar Natesaiyer, Qiang Yu | 2004-10-19 |