Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8470461 | Light weight gypsum board | Qiang Yu, Weixin D. Song | 2013-06-25 |
| 8257489 | Slurries and methods of making light weight gypsum board | Qiang Yu, Weixin D. Song | 2012-09-04 |
| 8197952 | High starch light weight gypsum wallboard | Qiang Yu, Weixin D. Song | 2012-06-12 |
| RE41592 | Method of producing gypsum/fiber board | Frederick T. Jones, Gregory J. Cormier | 2010-08-31 |
| 7731794 | High starch light weight gypsum wallboard | Qiang Yu, Weixin D. Song | 2010-06-08 |
| 7588634 | Process for manufacturing ultra low consistency alpha- and beta- blend stucco | W. David Song, Qingxia Liu, Qiang Yu, Michael L. Cloud | 2009-09-15 |
| 6740395 | Substrate smoothed by coating with gypsum-containing composition and method of making | John D. Halm, Aida L. Carbo, Richard B. Stevens, Charles J. Miller, Peter M. Attard +1 more | 2004-05-25 |
| 6508895 | Method of producing gypsum/fiber board | Frederick T. Jones, Gregory J. Cormier | 2003-01-21 |
| 6221521 | Non-combustible gypsum/fiber board | Steven Blaine | 2001-04-24 |