Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5853475 | Compressive strength of concrete and mortar containing fly ash | John W. Liskowitz, Methi Wecharatana, Anthony E. Cerkanowicz | 1998-12-29 |
| 5772752 | Sulfate and acid resistant concrete and mortar | John W. Liskowitz, Methi Wecharatana, Anthony E. Cerkanowicz | 1998-06-30 |
| 5681384 | Method for increasing the rate of compressive strength gain in hardenable mixtures containing fly ash | John W. Liskowitz, Methi Wecharatana, Anthony E. Cerkanowicz | 1997-10-28 |
| 5624491 | Compressive strength of concrete and mortar containing fly ash | John W. Liskowitz, Methi Wecharatana, Anthony E. Cerkanowicz | 1997-04-29 |