Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7851057 | Acoustical panel comprising interlocking matrix of set gypsum and method for making same | Mark H. Englert, Richard B. Stevens, Steven W. Sucech, Michael J. Porter, Bruce L. Petersen +1 more | 2010-12-14 |
| 7364015 | Acoustical panel comprising interlocking matrix of set gypsum and method for making same | Mark H. Englert, Richard B. Stevens, Steven W. Sucech, Michael J. Porter, Bruce L. Petersen +1 more | 2008-04-29 |
| 6740395 | Substrate smoothed by coating with gypsum-containing composition and method of making | John D. Halm, Aida L. Carbo, Michael R. Lynn, Richard B. Stevens, Charles J. Miller +1 more | 2004-05-25 |
| 6716906 | Abuse resistant skim coating composition | Thomas G. Houman, Richard B. Stevens, Timothy G. Kenny | 2004-04-06 |