Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8337976 | Abuse-resistant cast acoustical ceiling tile having an excellent sound absorption value | Thomas M. Mayers, Jeffry T. Russart | 2012-12-25 |
| 5753871 | Sag resistant, cast acoustical ceiling tile and method for making the same | Bruce J. Kahara | 1998-05-19 |