Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8079538 | Cementitous composition and apparatus and method for manufacturing the same | Louis U. Spellman | 2011-12-20 |
| 8056631 | Cementitious compositions having coarse ground blast furnace slag and methods of making and using the same | Louis U. Spellman | 2011-11-15 |
| 7927417 | Cementitious composition and apparatus and method for manufacturing the same | Louis U. Spellman | 2011-04-19 |