Issued Patents 2021
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11186066 | Gypsum board from gypsum having high level of chloride salt and a perforated sheet and methods associated therewith | Qinghua Li, Charles W. Cochran | 2021-11-30 |
| 11186067 | Gypsum board from gypsum having high level of chloride salt and a starch layer and methods associated therewith | Qinghua Li, Runhai Lu, Charles W. Cochran | 2021-11-30 |
| 11046053 | Composite gypsum board and related methods | Yijun Sang | 2021-06-29 |
| 11002010 | Methods for making high sound transmission class gypsum boards and gypsum boards made by the method | Suman Sinha Ray, Mark Antosh, Yijun Sang | 2021-05-11 |