Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306344 | Mixture of portland cement concrete materials for freeze/thaw resistance | James L. Thornley | 1994-04-26 |
| 4737193 | Chemical additive for hydraulic cement mixes | Donald R. Lane, Jose A. Melendez | 1988-04-12 |
| 4689083 | Chemical additive for hydraulic cement mixes | Donald R. Lane | 1987-08-25 |
| 4540438 | Ferrosilicon aggregate for concrete and resins | Donald R. Holm | 1985-09-10 |