Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12415765 | Board with fiber-reinforced dense layer | Annamaria Vilinska, Yijun Sang, Nicholas S. JONES, Kevern O. FRASER, Jon CROSS +1 more | 2025-09-16 |
| 12304871 | Open-celled gypsum core, gypsum acoustic panel, and method for making same | Yijun Sang, Suman Sinha Ray | 2025-05-20 |
| 11999658 | High salt gypsum wallboard containing salt absorbents and methods of making same | Qinghua Li | 2024-06-04 |
| 11993054 | Method of preparing gypsum wallboard from high salt gypsum, and related product | Qinghua Li | 2024-05-28 |
| 11891336 | Gypsum board containing high absorption paper and related methods | Qinghua Li | 2024-02-06 |
| 11834374 | Accelerator comprising starch, and related board, slurries, and methods | Yijun Sang, Yongman Kim, James W. Barber | 2023-12-05 |
| 11834375 | Fire resistant gypsum board and related methods | Qinghua Li, Naveen Punati | 2023-12-05 |
| 11787739 | Flour binder for gypsum board, and related methods, product, and slurries | Yijun Sang | 2023-10-17 |
| 11760689 | Methods of removing chloride from gypsum having high level of chloride salt | Qinghua Li, Ashish Dubey | 2023-09-19 |
| 11702373 | Gypsum wallboard with enhanced fire resistance, and related coatings and methods | Qinghua Li, Naser Aldabaibeh, Trevor Rische, Suman Sinha Ray | 2023-07-18 |
| 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 |
| 6874930 | Slurry mixer outlet | James R. Wittbold, Amit Duvedi, Michael P. Shake, Wayne Anthony Fleming | 2005-04-05 |
| 6494609 | Slurry mixer outlet | James R. Wittbold, Amit Duvedi, Wayne Anthony Fleming, Wilford Gary Pittman, Kirk S. Moore +1 more | 2002-12-17 |