Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5556458 | Cementitious compositions | John W. Brook, David F. Factor, Frederick D. Kinney, Andrea M. Young | 1996-09-17 |
| 5536310 | Cementitious compositions containing fly ash | John W. Brook, David F. Factor, Frederick D. Kinney, Andrea M. Young | 1996-07-16 |